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Finding the Fourth Proportional to 478,620.77, 660,496.82 and 260,829.52

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Solution

The fourth proportional to 478,620.77, 660,496.82 and 260,829.52 is: 359,944.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,620.77 : 660,496.82 = 260,829.52 : x
  2. Step 2: Convert to fraction form
    478,620.77/660,496.82 = 260,829.52/x
  3. Step 3: Cross multiply
    478,620.77x = 660,496.82 × 260,829.52
  4. Step 4: Simplify right side
    478,620.77x = 172,277,063,915.50
  5. Step 5: Solve for x
    x = 172,277,063,915.50/478,620.77
  6. Step 6: Final answer
    x = 359,944.81

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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.