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Finding the Fourth Proportional to 478,876.57, 660,162.77 and 376,724.49

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Solution

The fourth proportional to 478,876.57, 660,162.77 and 376,724.49 is: 519,339.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,876.57 : 660,162.77 = 376,724.49 : x
  2. Step 2: Convert to fraction form
    478,876.57/660,162.77 = 376,724.49/x
  3. Step 3: Cross multiply
    478,876.57x = 660,162.77 × 376,724.49
  4. Step 4: Simplify right side
    478,876.57x = 248,699,482,017.80
  5. Step 5: Solve for x
    x = 248,699,482,017.80/478,876.57
  6. Step 6: Final answer
    x = 519,339.42

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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.