Home / 537,721.20-806,581.80-479,660.40

Finding the Fourth Proportional to 537,721.20, 806,581.80 and 479,660.40

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Solution

The fourth proportional to 537,721.20, 806,581.80 and 479,660.40 is: 719,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,721.20 : 806,581.80 = 479,660.40 : x
  2. Step 2: Convert to fraction form
    537,721.20/806,581.80 = 479,660.40/x
  3. Step 3: Cross multiply
    537,721.20x = 806,581.80 × 479,660.40
  4. Step 4: Simplify right side
    537,721.20x = 386,885,348,820.72
  5. Step 5: Solve for x
    x = 386,885,348,820.72/537,721.20
  6. Step 6: Final answer
    x = 719,490.60

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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.