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Finding the Fourth Proportional to 852,480,750.80, 1,278,721,126.20 and 852,480,750.80

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Solution

The fourth proportional to 852,480,750.80, 1,278,721,126.20 and 852,480,750.80 is: 1,278,721,126.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,480,750.80 : 1,278,721,126.20 = 852,480,750.80 : x
  2. Step 2: Convert to fraction form
    852,480,750.80/1,278,721,126.20 = 852,480,750.80/x
  3. Step 3: Cross multiply
    852,480,750.80x = 1,278,721,126.20 × 852,480,750.80
  4. Step 4: Simplify right side
    852,480,750.80x = 1,090,085,145,726,797,568
  5. Step 5: Solve for x
    x = 1,090,085,145,726,797,568/852,480,750.80
  6. Step 6: Final answer
    x = 1,278,721,126.20

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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.