Home / 509,434.20-703,026.48-280,012.70

Finding the Fourth Proportional to 509,434.20, 703,026.48 and 280,012.70

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Solution

The fourth proportional to 509,434.20, 703,026.48 and 280,012.70 is: 386,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,434.20 : 703,026.48 = 280,012.70 : x
  2. Step 2: Convert to fraction form
    509,434.20/703,026.48 = 280,012.70/x
  3. Step 3: Cross multiply
    509,434.20x = 703,026.48 × 280,012.70
  4. Step 4: Simplify right side
    509,434.20x = 196,856,342,836.30
  5. Step 5: Solve for x
    x = 196,856,342,836.30/509,434.20
  6. Step 6: Final answer
    x = 386,421.53

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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.