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Finding the Fourth Proportional to 663,787.76, 996,420.16 and 343,854.22

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Solution

The fourth proportional to 663,787.76, 996,420.16 and 343,854.22 is: 516,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,787.76 : 996,420.16 = 343,854.22 : x
  2. Step 2: Convert to fraction form
    663,787.76/996,420.16 = 343,854.22/x
  3. Step 3: Cross multiply
    663,787.76x = 996,420.16 × 343,854.22
  4. Step 4: Simplify right side
    663,787.76x = 342,623,276,909.08
  5. Step 5: Solve for x
    x = 342,623,276,909.08/663,787.76
  6. Step 6: Final answer
    x = 516,163.90

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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.