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Finding the Fourth Proportional to 800,947,250.40, 1,201,420,875.60 and 744,827,080.80

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Solution

The fourth proportional to 800,947,250.40, 1,201,420,875.60 and 744,827,080.80 is: 1,117,240,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,947,250.40 : 1,201,420,875.60 = 744,827,080.80 : x
  2. Step 2: Convert to fraction form
    800,947,250.40/1,201,420,875.60 = 744,827,080.80/x
  3. Step 3: Cross multiply
    800,947,250.40x = 1,201,420,875.60 × 744,827,080.80
  4. Step 4: Simplify right side
    800,947,250.40x = 894,850,803,585,327,872
  5. Step 5: Solve for x
    x = 894,850,803,585,327,872/800,947,250.40
  6. Step 6: Final answer
    x = 1,117,240,621.20

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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.