Home / 729,451.32-1,006,640.30-407,158.62

Finding the Fourth Proportional to 729,451.32, 1,006,640.30 and 407,158.62

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Solution

The fourth proportional to 729,451.32, 1,006,640.30 and 407,158.62 is: 561,877.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    729,451.32 : 1,006,640.30 = 407,158.62 : x
  2. Step 2: Convert to fraction form
    729,451.32/1,006,640.30 = 407,158.62/x
  3. Step 3: Cross multiply
    729,451.32x = 1,006,640.30 × 407,158.62
  4. Step 4: Simplify right side
    729,451.32x = 409,862,275,384.39
  5. Step 5: Solve for x
    x = 409,862,275,384.39/729,451.32
  6. Step 6: Final answer
    x = 561,877.49

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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.