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Finding the Fourth Proportional to 640,871.64, 961,885.26 and 341,601.48

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Solution

The fourth proportional to 640,871.64, 961,885.26 and 341,601.48 is: 512,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,871.64 : 961,885.26 = 341,601.48 : x
  2. Step 2: Convert to fraction form
    640,871.64/961,885.26 = 341,601.48/x
  3. Step 3: Cross multiply
    640,871.64x = 961,885.26 × 341,601.48
  4. Step 4: Simplify right side
    640,871.64x = 328,581,428,406.19
  5. Step 5: Solve for x
    x = 328,581,428,406.19/640,871.64
  6. Step 6: Final answer
    x = 512,710.20

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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.