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Finding the Fourth Proportional to 561,681.30, 787,753.50 and 561,681.30

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Solution

The fourth proportional to 561,681.30, 787,753.50 and 561,681.30 is: 787,753.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,681.30 : 787,753.50 = 561,681.30 : x
  2. Step 2: Convert to fraction form
    561,681.30/787,753.50 = 561,681.30/x
  3. Step 3: Cross multiply
    561,681.30x = 787,753.50 × 561,681.30
  4. Step 4: Simplify right side
    561,681.30x = 442,466,409,959.55
  5. Step 5: Solve for x
    x = 442,466,409,959.55/561,681.30
  6. Step 6: Final answer
    x = 787,753.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.