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Finding the Fourth Proportional to 804,700.80, 1,207,310.40 and 538,761.60

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Solution

The fourth proportional to 804,700.80, 1,207,310.40 and 538,761.60 is: 808,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,700.80 : 1,207,310.40 = 538,761.60 : x
  2. Step 2: Convert to fraction form
    804,700.80/1,207,310.40 = 538,761.60/x
  3. Step 3: Cross multiply
    804,700.80x = 1,207,310.40 × 538,761.60
  4. Step 4: Simplify right side
    804,700.80x = 650,452,482,800.64
  5. Step 5: Solve for x
    x = 650,452,482,800.64/804,700.80
  6. Step 6: Final answer
    x = 808,315.94

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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.