Home / 759,145.20-1,139,072.04-338,377.20

Finding the Fourth Proportional to 759,145.20, 1,139,072.04 and 338,377.20

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Solution

The fourth proportional to 759,145.20, 1,139,072.04 and 338,377.20 is: 507,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,145.20 : 1,139,072.04 = 338,377.20 : x
  2. Step 2: Convert to fraction form
    759,145.20/1,139,072.04 = 338,377.20/x
  3. Step 3: Cross multiply
    759,145.20x = 1,139,072.04 × 338,377.20
  4. Step 4: Simplify right side
    759,145.20x = 385,436,007,493.49
  5. Step 5: Solve for x
    x = 385,436,007,493.49/759,145.20
  6. Step 6: Final answer
    x = 507,723.70

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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.