Home / 726,761,449.20-1,090,142,173.80-670,641,279.60

Finding the Fourth Proportional to 726,761,449.20, 1,090,142,173.80 and 670,641,279.60

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Solution

The fourth proportional to 726,761,449.20, 1,090,142,173.80 and 670,641,279.60 is: 1,005,961,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,761,449.20 : 1,090,142,173.80 = 670,641,279.60 : x
  2. Step 2: Convert to fraction form
    726,761,449.20/1,090,142,173.80 = 670,641,279.60/x
  3. Step 3: Cross multiply
    726,761,449.20x = 1,090,142,173.80 × 670,641,279.60
  4. Step 4: Simplify right side
    726,761,449.20x = 731,094,342,383,157,632
  5. Step 5: Solve for x
    x = 731,094,342,383,157,632/726,761,449.20
  6. Step 6: Final answer
    x = 1,005,961,919.40

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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.