Home / 912,711.70-1,369,845.15-408,049.30

Finding the Fourth Proportional to 912,711.70, 1,369,845.15 and 408,049.30

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Solution

The fourth proportional to 912,711.70, 1,369,845.15 and 408,049.30 is: 612,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,711.70 : 1,369,845.15 = 408,049.30 : x
  2. Step 2: Convert to fraction form
    912,711.70/1,369,845.15 = 408,049.30/x
  3. Step 3: Cross multiply
    912,711.70x = 1,369,845.15 × 408,049.30
  4. Step 4: Simplify right side
    912,711.70x = 558,964,354,565.90
  5. Step 5: Solve for x
    x = 558,964,354,565.90/912,711.70
  6. Step 6: Final answer
    x = 612,421.59

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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.