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Finding the Fourth Proportional to 992,470.40, 1,488,705.60 and 908,489.60

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Solution

The fourth proportional to 992,470.40, 1,488,705.60 and 908,489.60 is: 1,362,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,470.40 : 1,488,705.60 = 908,489.60 : x
  2. Step 2: Convert to fraction form
    992,470.40/1,488,705.60 = 908,489.60/x
  3. Step 3: Cross multiply
    992,470.40x = 1,488,705.60 × 908,489.60
  4. Step 4: Simplify right side
    992,470.40x = 1,352,473,555,061.76
  5. Step 5: Solve for x
    x = 1,352,473,555,061.76/992,470.40
  6. Step 6: Final answer
    x = 1,362,734.40

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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.