Home / 918,267.70-1,377,401.55-287,374.90

Finding the Fourth Proportional to 918,267.70, 1,377,401.55 and 287,374.90

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Solution

The fourth proportional to 918,267.70, 1,377,401.55 and 287,374.90 is: 431,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,267.70 : 1,377,401.55 = 287,374.90 : x
  2. Step 2: Convert to fraction form
    918,267.70/1,377,401.55 = 287,374.90/x
  3. Step 3: Cross multiply
    918,267.70x = 1,377,401.55 × 287,374.90
  4. Step 4: Simplify right side
    918,267.70x = 395,830,632,691.10
  5. Step 5: Solve for x
    x = 395,830,632,691.10/918,267.70
  6. Step 6: Final answer
    x = 431,062.35

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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.