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Finding the Fourth Proportional to 478,763.06, 660,752.84 and 274,877.85

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Solution

The fourth proportional to 478,763.06, 660,752.84 and 274,877.85 is: 379,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,763.06 : 660,752.84 = 274,877.85 : x
  2. Step 2: Convert to fraction form
    478,763.06/660,752.84 = 274,877.85/x
  3. Step 3: Cross multiply
    478,763.06x = 660,752.84 × 274,877.85
  4. Step 4: Simplify right side
    478,763.06x = 181,626,323,205.61
  5. Step 5: Solve for x
    x = 181,626,323,205.61/478,763.06
  6. Step 6: Final answer
    x = 379,365.79

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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.