Home / 509,433.20-703,025.10-280,011.70

Finding the Fourth Proportional to 509,433.20, 703,025.10 and 280,011.70

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Solution

The fourth proportional to 509,433.20, 703,025.10 and 280,011.70 is: 386,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,433.20 : 703,025.10 = 280,011.70 : x
  2. Step 2: Convert to fraction form
    509,433.20/703,025.10 = 280,011.70/x
  3. Step 3: Cross multiply
    509,433.20x = 703,025.10 × 280,011.70
  4. Step 4: Simplify right side
    509,433.20x = 196,855,253,484.92
  5. Step 5: Solve for x
    x = 196,855,253,484.92/509,433.20
  6. Step 6: Final answer
    x = 386,420.15

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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.