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Finding the Fourth Proportional to 478,574.78, 660,459.18 and 274,624.02

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Solution

The fourth proportional to 478,574.78, 660,459.18 and 274,624.02 is: 378,996.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,574.78 : 660,459.18 = 274,624.02 : x
  2. Step 2: Convert to fraction form
    478,574.78/660,459.18 = 274,624.02/x
  3. Step 3: Cross multiply
    478,574.78x = 660,459.18 × 274,624.02
  4. Step 4: Simplify right side
    478,574.78x = 181,377,955,057.50
  5. Step 5: Solve for x
    x = 181,377,955,057.50/478,574.78
  6. Step 6: Final answer
    x = 378,996.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.