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Finding the Fourth Proportional to 626,411.34, 864,449.92 and 339,931.36

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Solution

The fourth proportional to 626,411.34, 864,449.92 and 339,931.36 is: 469,106.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,411.34 : 864,449.92 = 339,931.36 : x
  2. Step 2: Convert to fraction form
    626,411.34/864,449.92 = 339,931.36/x
  3. Step 3: Cross multiply
    626,411.34x = 864,449.92 × 339,931.36
  4. Step 4: Simplify right side
    626,411.34x = 293,853,636,957.49
  5. Step 5: Solve for x
    x = 293,853,636,957.49/626,411.34
  6. Step 6: Final answer
    x = 469,106.51

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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.