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Finding the Fourth Proportional to 850,885.12, 1,276,549.08 and 318,448

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Solution

The fourth proportional to 850,885.12, 1,276,549.08 and 318,448 is: 477,754.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,885.12 : 1,276,549.08 = 318,448 : x
  2. Step 2: Convert to fraction form
    850,885.12/1,276,549.08 = 318,448/x
  3. Step 3: Cross multiply
    850,885.12x = 1,276,549.08 × 318,448
  4. Step 4: Simplify right side
    850,885.12x = 406,514,501,427.84
  5. Step 5: Solve for x
    x = 406,514,501,427.84/850,885.12
  6. Step 6: Final answer
    x = 477,754.86

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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.