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Finding the Fourth Proportional to 625,617.63, 938,661.35 and 288,819.63

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Solution

The fourth proportional to 625,617.63, 938,661.35 and 288,819.63 is: 433,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,617.63 : 938,661.35 = 288,819.63 : x
  2. Step 2: Convert to fraction form
    625,617.63/938,661.35 = 288,819.63/x
  3. Step 3: Cross multiply
    625,617.63x = 938,661.35 × 288,819.63
  4. Step 4: Simplify right side
    625,617.63x = 271,103,822,358.20
  5. Step 5: Solve for x
    x = 271,103,822,358.20/625,617.63
  6. Step 6: Final answer
    x = 433,337.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.