Home / 479,956.20-719,934.30-386,644.20

Finding the Fourth Proportional to 479,956.20, 719,934.30 and 386,644.20

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Solution

The fourth proportional to 479,956.20, 719,934.30 and 386,644.20 is: 579,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,956.20 : 719,934.30 = 386,644.20 : x
  2. Step 2: Convert to fraction form
    479,956.20/719,934.30 = 386,644.20/x
  3. Step 3: Cross multiply
    479,956.20x = 719,934.30 × 386,644.20
  4. Step 4: Simplify right side
    479,956.20x = 278,358,421,476.06
  5. Step 5: Solve for x
    x = 278,358,421,476.06/479,956.20
  6. Step 6: Final answer
    x = 579,966.30

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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.