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Finding the Fourth Proportional to 668,720.90, 922,834.71 and 382,247.12

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Solution

The fourth proportional to 668,720.90, 922,834.71 and 382,247.12 is: 527,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,720.90 : 922,834.71 = 382,247.12 : x
  2. Step 2: Convert to fraction form
    668,720.90/922,834.71 = 382,247.12/x
  3. Step 3: Cross multiply
    668,720.90x = 922,834.71 × 382,247.12
  4. Step 4: Simplify right side
    668,720.90x = 352,750,912,440.62
  5. Step 5: Solve for x
    x = 352,750,912,440.62/668,720.90
  6. Step 6: Final answer
    x = 527,500.95

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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.