Home / 918,266.70-1,377,400.05-287,373.90

Finding the Fourth Proportional to 918,266.70, 1,377,400.05 and 287,373.90

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Solution

The fourth proportional to 918,266.70, 1,377,400.05 and 287,373.90 is: 431,060.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,266.70 : 1,377,400.05 = 287,373.90 : x
  2. Step 2: Convert to fraction form
    918,266.70/1,377,400.05 = 287,373.90/x
  3. Step 3: Cross multiply
    918,266.70x = 1,377,400.05 × 287,373.90
  4. Step 4: Simplify right side
    918,266.70x = 395,828,824,228.70
  5. Step 5: Solve for x
    x = 395,828,824,228.70/918,266.70
  6. Step 6: Final answer
    x = 431,060.85

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Double scale
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Similar ratio
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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.