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Finding the Fourth Proportional to 988,605.20, 1,482,907.80 and 671,344.40

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Solution

The fourth proportional to 988,605.20, 1,482,907.80 and 671,344.40 is: 1,007,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,605.20 : 1,482,907.80 = 671,344.40 : x
  2. Step 2: Convert to fraction form
    988,605.20/1,482,907.80 = 671,344.40/x
  3. Step 3: Cross multiply
    988,605.20x = 1,482,907.80 × 671,344.40
  4. Step 4: Simplify right side
    988,605.20x = 995,541,847,246.32
  5. Step 5: Solve for x
    x = 995,541,847,246.32/988,605.20
  6. Step 6: Final answer
    x = 1,007,016.60

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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.