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Finding the Fourth Proportional to 626,452.76, 864,505.40 and 339,972.92

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Solution

The fourth proportional to 626,452.76, 864,505.40 and 339,972.92 is: 469,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,452.76 : 864,505.40 = 339,972.92 : x
  2. Step 2: Convert to fraction form
    626,452.76/864,505.40 = 339,972.92/x
  3. Step 3: Cross multiply
    626,452.76x = 864,505.40 × 339,972.92
  4. Step 4: Simplify right side
    626,452.76x = 293,908,425,193.77
  5. Step 5: Solve for x
    x = 293,908,425,193.77/626,452.76
  6. Step 6: Final answer
    x = 469,162.95

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Double scale
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1.5x scale

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.