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Finding the Fourth Proportional to 626,962.95, 865,473.66 and 423,289.71

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Solution

The fourth proportional to 626,962.95, 865,473.66 and 423,289.71 is: 584,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,962.95 : 865,473.66 = 423,289.71 : x
  2. Step 2: Convert to fraction form
    626,962.95/865,473.66 = 423,289.71/x
  3. Step 3: Cross multiply
    626,962.95x = 865,473.66 × 423,289.71
  4. Step 4: Simplify right side
    626,962.95x = 366,346,094,554.04
  5. Step 5: Solve for x
    x = 366,346,094,554.04/626,962.95
  6. Step 6: Final answer
    x = 584,318.57

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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.