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Finding the Fourth Proportional to 721,492.32, 1,081,692 and 437,124

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Solution

The fourth proportional to 721,492.32, 1,081,692 and 437,124 is: 655,354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,492.32 : 1,081,692 = 437,124 : x
  2. Step 2: Convert to fraction form
    721,492.32/1,081,692 = 437,124/x
  3. Step 3: Cross multiply
    721,492.32x = 1,081,692 × 437,124
  4. Step 4: Simplify right side
    721,492.32x = 472,833,533,808
  5. Step 5: Solve for x
    x = 472,833,533,808/721,492.32
  6. Step 6: Final answer
    x = 655,354.91

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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.