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Finding the Fourth Proportional to 492,411.80, 739,200.90 and 279,349.40

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Solution

The fourth proportional to 492,411.80, 739,200.90 and 279,349.40 is: 419,354.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,411.80 : 739,200.90 = 279,349.40 : x
  2. Step 2: Convert to fraction form
    492,411.80/739,200.90 = 279,349.40/x
  3. Step 3: Cross multiply
    492,411.80x = 739,200.90 × 279,349.40
  4. Step 4: Simplify right side
    492,411.80x = 206,495,327,894.46
  5. Step 5: Solve for x
    x = 206,495,327,894.46/492,411.80
  6. Step 6: Final answer
    x = 419,354.95

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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.