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Finding the Fourth Proportional to 1,292,956.04, 1,784,279.32 and 749,407.11

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Solution

The fourth proportional to 1,292,956.04, 1,784,279.32 and 749,407.11 is: 1,034,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,956.04 : 1,784,279.32 = 749,407.11 : x
  2. Step 2: Convert to fraction form
    1,292,956.04/1,784,279.32 = 749,407.11/x
  3. Step 3: Cross multiply
    1,292,956.04x = 1,784,279.32 × 749,407.11
  4. Step 4: Simplify right side
    1,292,956.04x = 1,337,151,600,069.40
  5. Step 5: Solve for x
    x = 1,337,151,600,069.40/1,292,956.04
  6. Step 6: Final answer
    x = 1,034,181.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.