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Finding the Fourth Proportional to 584,447.20, 876,670.80 and 318,726.70

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Solution

The fourth proportional to 584,447.20, 876,670.80 and 318,726.70 is: 478,090.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,447.20 : 876,670.80 = 318,726.70 : x
  2. Step 2: Convert to fraction form
    584,447.20/876,670.80 = 318,726.70/x
  3. Step 3: Cross multiply
    584,447.20x = 876,670.80 × 318,726.70
  4. Step 4: Simplify right side
    584,447.20x = 279,418,391,070.36
  5. Step 5: Solve for x
    x = 279,418,391,070.36/584,447.20
  6. Step 6: Final answer
    x = 478,090.05

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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.