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Finding the Fourth Proportional to 636,884.02, 878,906.92 and 346,497.24

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Solution

The fourth proportional to 636,884.02, 878,906.92 and 346,497.24 is: 478,169.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,884.02 : 878,906.92 = 346,497.24 : x
  2. Step 2: Convert to fraction form
    636,884.02/878,906.92 = 346,497.24/x
  3. Step 3: Cross multiply
    636,884.02x = 878,906.92 × 346,497.24
  4. Step 4: Simplify right side
    636,884.02x = 304,538,820,108.65
  5. Step 5: Solve for x
    x = 304,538,820,108.65/636,884.02
  6. Step 6: Final answer
    x = 478,169.98

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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.