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Finding the Fourth Proportional to 626,962.68, 865,473.26 and 423,289.40

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Solution

The fourth proportional to 626,962.68, 865,473.26 and 423,289.40 is: 584,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,962.68 : 865,473.26 = 423,289.40 : x
  2. Step 2: Convert to fraction form
    626,962.68/865,473.26 = 423,289.40/x
  3. Step 3: Cross multiply
    626,962.68x = 865,473.26 × 423,289.40
  4. Step 4: Simplify right side
    626,962.68x = 366,345,650,497.63
  5. Step 5: Solve for x
    x = 366,345,650,497.63/626,962.68
  6. Step 6: Final answer
    x = 584,318.11

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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.