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Finding the Fourth Proportional to 583,485.20, 875,227.80 and 478,422.80

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Solution

The fourth proportional to 583,485.20, 875,227.80 and 478,422.80 is: 717,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,485.20 : 875,227.80 = 478,422.80 : x
  2. Step 2: Convert to fraction form
    583,485.20/875,227.80 = 478,422.80/x
  3. Step 3: Cross multiply
    583,485.20x = 875,227.80 × 478,422.80
  4. Step 4: Simplify right side
    583,485.20x = 418,728,934,713.84
  5. Step 5: Solve for x
    x = 418,728,934,713.84/583,485.20
  6. Step 6: Final answer
    x = 717,634.20

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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.