Home / 981,710.70-1,472,566.05-509,318.70

Finding the Fourth Proportional to 981,710.70, 1,472,566.05 and 509,318.70

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Solution

The fourth proportional to 981,710.70, 1,472,566.05 and 509,318.70 is: 763,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,710.70 : 1,472,566.05 = 509,318.70 : x
  2. Step 2: Convert to fraction form
    981,710.70/1,472,566.05 = 509,318.70/x
  3. Step 3: Cross multiply
    981,710.70x = 1,472,566.05 × 509,318.70
  4. Step 4: Simplify right side
    981,710.70x = 750,005,426,250.14
  5. Step 5: Solve for x
    x = 750,005,426,250.14/981,710.70
  6. Step 6: Final answer
    x = 763,978.05

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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.