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Finding the Fourth Proportional to 636,989.40, 955,484.10 and 356,470.20

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Solution

The fourth proportional to 636,989.40, 955,484.10 and 356,470.20 is: 534,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,989.40 : 955,484.10 = 356,470.20 : x
  2. Step 2: Convert to fraction form
    636,989.40/955,484.10 = 356,470.20/x
  3. Step 3: Cross multiply
    636,989.40x = 955,484.10 × 356,470.20
  4. Step 4: Simplify right side
    636,989.40x = 340,601,608,223.82
  5. Step 5: Solve for x
    x = 340,601,608,223.82/636,989.40
  6. Step 6: Final answer
    x = 534,705.30

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Similar ratio
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1.5x scale

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.