Home / 918,478.17-1,377,743.18-253,630.17

Finding the Fourth Proportional to 918,478.17, 1,377,743.18 and 253,630.17

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Solution

The fourth proportional to 918,478.17, 1,377,743.18 and 253,630.17 is: 380,452.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,478.17 : 1,377,743.18 = 253,630.17 : x
  2. Step 2: Convert to fraction form
    918,478.17/1,377,743.18 = 253,630.17/x
  3. Step 3: Cross multiply
    918,478.17x = 1,377,743.18 × 253,630.17
  4. Step 4: Simplify right side
    918,478.17x = 349,437,235,691.59
  5. Step 5: Solve for x
    x = 349,437,235,691.59/918,478.17
  6. Step 6: Final answer
    x = 380,452.41

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Double scale
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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.