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Finding the Fourth Proportional to 674,246.40, 930,488.32 and 387,766.70

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Solution

The fourth proportional to 674,246.40, 930,488.32 and 387,766.70 is: 535,134.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,246.40 : 930,488.32 = 387,766.70 : x
  2. Step 2: Convert to fraction form
    674,246.40/930,488.32 = 387,766.70/x
  3. Step 3: Cross multiply
    674,246.40x = 930,488.32 × 387,766.70
  4. Step 4: Simplify right side
    674,246.40x = 360,812,385,234.94
  5. Step 5: Solve for x
    x = 360,812,385,234.94/674,246.40
  6. Step 6: Final answer
    x = 535,134.31

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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.