Home / 885,146,962.45-1,327,720,443.68-425,981,938.45

Finding the Fourth Proportional to 885,146,962.45, 1,327,720,443.68 and 425,981,938.45

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Solution

The fourth proportional to 885,146,962.45, 1,327,720,443.68 and 425,981,938.45 is: 638,972,907.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,146,962.45 : 1,327,720,443.68 = 425,981,938.45 : x
  2. Step 2: Convert to fraction form
    885,146,962.45/1,327,720,443.68 = 425,981,938.45/x
  3. Step 3: Cross multiply
    885,146,962.45x = 1,327,720,443.68 × 425,981,938.45
  4. Step 4: Simplify right side
    885,146,962.45x = 565,584,928,318,500,480
  5. Step 5: Solve for x
    x = 565,584,928,318,500,480/885,146,962.45
  6. Step 6: Final answer
    x = 638,972,907.68

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Double scale
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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.