Home / 711,153.48-981,402.30-481,780.92

Finding the Fourth Proportional to 711,153.48, 981,402.30 and 481,780.92

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Solution

The fourth proportional to 711,153.48, 981,402.30 and 481,780.92 is: 664,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,153.48 : 981,402.30 = 481,780.92 : x
  2. Step 2: Convert to fraction form
    711,153.48/981,402.30 = 481,780.92/x
  3. Step 3: Cross multiply
    711,153.48x = 981,402.30 × 481,780.92
  4. Step 4: Simplify right side
    711,153.48x = 472,820,902,984.12
  5. Step 5: Solve for x
    x = 472,820,902,984.12/711,153.48
  6. Step 6: Final answer
    x = 664,864.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.