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Finding the Fourth Proportional to 981,700.70, 1,470,477.45 and 815,812.70

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Solution

The fourth proportional to 981,700.70, 1,470,477.45 and 815,812.70 is: 1,221,995.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,700.70 : 1,470,477.45 = 815,812.70 : x
  2. Step 2: Convert to fraction form
    981,700.70/1,470,477.45 = 815,812.70/x
  3. Step 3: Cross multiply
    981,700.70x = 1,470,477.45 × 815,812.70
  4. Step 4: Simplify right side
    981,700.70x = 1,199,634,178,773.62
  5. Step 5: Solve for x
    x = 1,199,634,178,773.62/981,700.70
  6. Step 6: Final answer
    x = 1,221,995.85

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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.