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Finding the Fourth Proportional to 699,597.60, 965,278.80 and 397,957.92

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Solution

The fourth proportional to 699,597.60, 965,278.80 and 397,957.92 is: 549,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,597.60 : 965,278.80 = 397,957.92 : x
  2. Step 2: Convert to fraction form
    699,597.60/965,278.80 = 397,957.92/x
  3. Step 3: Cross multiply
    699,597.60x = 965,278.80 × 397,957.92
  4. Step 4: Simplify right side
    699,597.60x = 384,140,343,468.10
  5. Step 5: Solve for x
    x = 384,140,343,468.10/699,597.60
  6. Step 6: Final answer
    x = 549,087.57

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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.