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Finding the Fourth Proportional to 478,669.05, 660,551.92 and 260,884.61

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Solution

The fourth proportional to 478,669.05, 660,551.92 and 260,884.61 is: 360,014.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,669.05 : 660,551.92 = 260,884.61 : x
  2. Step 2: Convert to fraction form
    478,669.05/660,551.92 = 260,884.61/x
  3. Step 3: Cross multiply
    478,669.05x = 660,551.92 × 260,884.61
  4. Step 4: Simplify right side
    478,669.05x = 172,327,830,033.95
  5. Step 5: Solve for x
    x = 172,327,830,033.95/478,669.05
  6. Step 6: Final answer
    x = 360,014.57

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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.