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Finding the Fourth Proportional to 478,580.25, 660,437.91 and 260,788.53

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Solution

The fourth proportional to 478,580.25, 660,437.91 and 260,788.53 is: 359,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,580.25 : 660,437.91 = 260,788.53 : x
  2. Step 2: Convert to fraction form
    478,580.25/660,437.91 = 260,788.53/x
  3. Step 3: Cross multiply
    478,580.25x = 660,437.91 × 260,788.53
  4. Step 4: Simplify right side
    478,580.25x = 172,234,631,705.17
  5. Step 5: Solve for x
    x = 172,234,631,705.17/478,580.25
  6. Step 6: Final answer
    x = 359,886.63

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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.