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Finding the Fourth Proportional to 626,947.20, 865,452 and 423,274.02

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Solution

The fourth proportional to 626,947.20, 865,452 and 423,274.02 is: 584,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,947.20 : 865,452 = 423,274.02 : x
  2. Step 2: Convert to fraction form
    626,947.20/865,452 = 423,274.02/x
  3. Step 3: Cross multiply
    626,947.20x = 865,452 × 423,274.02
  4. Step 4: Simplify right side
    626,947.20x = 366,323,347,157.04
  5. Step 5: Solve for x
    x = 366,323,347,157.04/626,947.20
  6. Step 6: Final answer
    x = 584,296.97

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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.