Home / 918,385.06-1,377,743.88-378,341.24

Finding the Fourth Proportional to 918,385.06, 1,377,743.88 and 378,341.24

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Solution

The fourth proportional to 918,385.06, 1,377,743.88 and 378,341.24 is: 567,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,385.06 : 1,377,743.88 = 378,341.24 : x
  2. Step 2: Convert to fraction form
    918,385.06/1,377,743.88 = 378,341.24/x
  3. Step 3: Cross multiply
    918,385.06x = 1,377,743.88 × 378,341.24
  4. Step 4: Simplify right side
    918,385.06x = 521,257,327,961.61
  5. Step 5: Solve for x
    x = 521,257,327,961.61/918,385.06
  6. Step 6: Final answer
    x = 567,580.37

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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.