Home / 711,400.08-981,763.56-409,691.28

Finding the Fourth Proportional to 711,400.08, 981,763.56 and 409,691.28

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Solution

The fourth proportional to 711,400.08, 981,763.56 and 409,691.28 is: 565,392.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,400.08 : 981,763.56 = 409,691.28 : x
  2. Step 2: Convert to fraction form
    711,400.08/981,763.56 = 409,691.28/x
  3. Step 3: Cross multiply
    711,400.08x = 981,763.56 × 409,691.28
  4. Step 4: Simplify right side
    711,400.08x = 402,219,969,553.76
  5. Step 5: Solve for x
    x = 402,219,969,553.76/711,400.08
  6. Step 6: Final answer
    x = 565,392.08

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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.