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Finding the Fourth Proportional to 636,845.62, 878,908.98 and 475,420.36

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Solution

The fourth proportional to 636,845.62, 878,908.98 and 475,420.36 is: 656,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,845.62 : 878,908.98 = 475,420.36 : x
  2. Step 2: Convert to fraction form
    636,845.62/878,908.98 = 475,420.36/x
  3. Step 3: Cross multiply
    636,845.62x = 878,908.98 × 475,420.36
  4. Step 4: Simplify right side
    636,845.62x = 417,851,223,678.83
  5. Step 5: Solve for x
    x = 417,851,223,678.83/636,845.62
  6. Step 6: Final answer
    x = 656,126.40

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1.5x scale

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.