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Finding the Fourth Proportional to 661,491.08, 991,095.42 and 362,187.08

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Solution

The fourth proportional to 661,491.08, 991,095.42 and 362,187.08 is: 542,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,491.08 : 991,095.42 = 362,187.08 : x
  2. Step 2: Convert to fraction form
    661,491.08/991,095.42 = 362,187.08/x
  3. Step 3: Cross multiply
    661,491.08x = 991,095.42 × 362,187.08
  4. Step 4: Simplify right side
    661,491.08x = 358,961,956,171.17
  5. Step 5: Solve for x
    x = 358,961,956,171.17/661,491.08
  6. Step 6: Final answer
    x = 542,655.78

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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.