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Finding the Fourth Proportional to 629,387.16, 868,564.24 and 342,907.16

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Solution

The fourth proportional to 629,387.16, 868,564.24 and 342,907.16 is: 473,217.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,387.16 : 868,564.24 = 342,907.16 : x
  2. Step 2: Convert to fraction form
    629,387.16/868,564.24 = 342,907.16/x
  3. Step 3: Cross multiply
    629,387.16x = 868,564.24 × 342,907.16
  4. Step 4: Simplify right side
    629,387.16x = 297,836,896,815.96
  5. Step 5: Solve for x
    x = 297,836,896,815.96/629,387.16
  6. Step 6: Final answer
    x = 473,217.31

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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.