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Finding the Fourth Proportional to 661,967.64, 913,375.98 and 432,860.76

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Solution

The fourth proportional to 661,967.64, 913,375.98 and 432,860.76 is: 597,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,967.64 : 913,375.98 = 432,860.76 : x
  2. Step 2: Convert to fraction form
    661,967.64/913,375.98 = 432,860.76/x
  3. Step 3: Cross multiply
    661,967.64x = 913,375.98 × 432,860.76
  4. Step 4: Simplify right side
    661,967.64x = 395,364,620,868.55
  5. Step 5: Solve for x
    x = 395,364,620,868.55/661,967.64
  6. Step 6: Final answer
    x = 597,256.72

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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.