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Finding the Fourth Proportional to 876,335.76, 1,209,205.80 and 494,354.88

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Solution

The fourth proportional to 876,335.76, 1,209,205.80 and 494,354.88 is: 682,132.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,335.76 : 1,209,205.80 = 494,354.88 : x
  2. Step 2: Convert to fraction form
    876,335.76/1,209,205.80 = 494,354.88/x
  3. Step 3: Cross multiply
    876,335.76x = 1,209,205.80 × 494,354.88
  4. Step 4: Simplify right side
    876,335.76x = 597,776,788,154.30
  5. Step 5: Solve for x
    x = 597,776,788,154.30/876,335.76
  6. Step 6: Final answer
    x = 682,132.14

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1.5x scale

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.