Home / 1,247,643.60-1,870,543.80-499,304.40

Finding the Fourth Proportional to 1,247,643.60, 1,870,543.80 and 499,304.40

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Solution

The fourth proportional to 1,247,643.60, 1,870,543.80 and 499,304.40 is: 748,587.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,643.60 : 1,870,543.80 = 499,304.40 : x
  2. Step 2: Convert to fraction form
    1,247,643.60/1,870,543.80 = 499,304.40/x
  3. Step 3: Cross multiply
    1,247,643.60x = 1,870,543.80 × 499,304.40
  4. Step 4: Simplify right side
    1,247,643.60x = 933,970,749,732.72
  5. Step 5: Solve for x
    x = 933,970,749,732.72/1,247,643.60
  6. Step 6: Final answer
    x = 748,587.78

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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.