Home / 750,755,321.20-1,126,132,981.80-720,144,319.60

Finding the Fourth Proportional to 750,755,321.20, 1,126,132,981.80 and 720,144,319.60

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Solution

The fourth proportional to 750,755,321.20, 1,126,132,981.80 and 720,144,319.60 is: 1,080,216,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,755,321.20 : 1,126,132,981.80 = 720,144,319.60 : x
  2. Step 2: Convert to fraction form
    750,755,321.20/1,126,132,981.80 = 720,144,319.60/x
  3. Step 3: Cross multiply
    750,755,321.20x = 1,126,132,981.80 × 720,144,319.60
  4. Step 4: Simplify right side
    750,755,321.20x = 810,978,269,957,480,192
  5. Step 5: Solve for x
    x = 810,978,269,957,480,192/750,755,321.20
  6. Step 6: Final answer
    x = 1,080,216,479.40

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1.5x scale

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.