Home / 711,319.28-981,559.18-401,204.78

Finding the Fourth Proportional to 711,319.28, 981,559.18 and 401,204.78

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Solution

The fourth proportional to 711,319.28, 981,559.18 and 401,204.78 is: 553,627.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,319.28 : 981,559.18 = 401,204.78 : x
  2. Step 2: Convert to fraction form
    711,319.28/981,559.18 = 401,204.78/x
  3. Step 3: Cross multiply
    711,319.28x = 981,559.18 × 401,204.78
  4. Step 4: Simplify right side
    711,319.28x = 393,806,239,664.71
  5. Step 5: Solve for x
    x = 393,806,239,664.71/711,319.28
  6. Step 6: Final answer
    x = 553,627.96

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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.