Home / 945,539.40-1,418,309.10-280,691.40

Finding the Fourth Proportional to 945,539.40, 1,418,309.10 and 280,691.40

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Solution

The fourth proportional to 945,539.40, 1,418,309.10 and 280,691.40 is: 421,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,539.40 : 1,418,309.10 = 280,691.40 : x
  2. Step 2: Convert to fraction form
    945,539.40/1,418,309.10 = 280,691.40/x
  3. Step 3: Cross multiply
    945,539.40x = 1,418,309.10 × 280,691.40
  4. Step 4: Simplify right side
    945,539.40x = 398,107,166,911.74
  5. Step 5: Solve for x
    x = 398,107,166,911.74/945,539.40
  6. Step 6: Final answer
    x = 421,037.10

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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.