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Finding the Fourth Proportional to 656,187.60, 985,447.80 and 478,894.80

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Solution

The fourth proportional to 656,187.60, 985,447.80 and 478,894.80 is: 719,193.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,187.60 : 985,447.80 = 478,894.80 : x
  2. Step 2: Convert to fraction form
    656,187.60/985,447.80 = 478,894.80/x
  3. Step 3: Cross multiply
    656,187.60x = 985,447.80 × 478,894.80
  4. Step 4: Simplify right side
    656,187.60x = 471,925,827,091.44
  5. Step 5: Solve for x
    x = 471,925,827,091.44/656,187.60
  6. Step 6: Final answer
    x = 719,193.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.