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Finding the Fourth Proportional to 636,743.53, 878,708.15 and 350,285.41

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Solution

The fourth proportional to 636,743.53, 878,708.15 and 350,285.41 is: 483,395.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,743.53 : 878,708.15 = 350,285.41 : x
  2. Step 2: Convert to fraction form
    636,743.53/878,708.15 = 350,285.41/x
  3. Step 3: Cross multiply
    636,743.53x = 878,708.15 × 350,285.41
  4. Step 4: Simplify right side
    636,743.53x = 307,798,642,841.66
  5. Step 5: Solve for x
    x = 307,798,642,841.66/636,743.53
  6. Step 6: Final answer
    x = 483,395.01

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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.