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Finding the Fourth Proportional to 727,967.30, 1,091,950.95 and 413,039.30

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Solution

The fourth proportional to 727,967.30, 1,091,950.95 and 413,039.30 is: 619,558.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,967.30 : 1,091,950.95 = 413,039.30 : x
  2. Step 2: Convert to fraction form
    727,967.30/1,091,950.95 = 413,039.30/x
  3. Step 3: Cross multiply
    727,967.30x = 1,091,950.95 × 413,039.30
  4. Step 4: Simplify right side
    727,967.30x = 451,018,656,022.34
  5. Step 5: Solve for x
    x = 451,018,656,022.34/727,967.30
  6. Step 6: Final answer
    x = 619,558.95

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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.