Home / 885,146,965.70-1,327,720,448.55-425,981,941.70

Finding the Fourth Proportional to 885,146,965.70, 1,327,720,448.55 and 425,981,941.70

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Solution

The fourth proportional to 885,146,965.70, 1,327,720,448.55 and 425,981,941.70 is: 638,972,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,146,965.70 : 1,327,720,448.55 = 425,981,941.70 : x
  2. Step 2: Convert to fraction form
    885,146,965.70/1,327,720,448.55 = 425,981,941.70/x
  3. Step 3: Cross multiply
    885,146,965.70x = 1,327,720,448.55 × 425,981,941.70
  4. Step 4: Simplify right side
    885,146,965.70x = 565,584,934,708,123,904
  5. Step 5: Solve for x
    x = 565,584,934,708,123,904/885,146,965.70
  6. Step 6: Final answer
    x = 638,972,912.55

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Half scale
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Double scale
Find fourth proportional to 885,146,966.70, 1,327,720,450.05 and 425,981,942.70
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.