Home / 918,647,470.80-1,377,971,206.20-838,293,591.60

Finding the Fourth Proportional to 918,647,470.80, 1,377,971,206.20 and 838,293,591.60

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Solution

The fourth proportional to 918,647,470.80, 1,377,971,206.20 and 838,293,591.60 is: 1,257,440,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,647,470.80 : 1,377,971,206.20 = 838,293,591.60 : x
  2. Step 2: Convert to fraction form
    918,647,470.80/1,377,971,206.20 = 838,293,591.60/x
  3. Step 3: Cross multiply
    918,647,470.80x = 1,377,971,206.20 × 838,293,591.60
  4. Step 4: Simplify right side
    918,647,470.80x = 1,155,144,431,566,782,208
  5. Step 5: Solve for x
    x = 1,155,144,431,566,782,208/918,647,470.80
  6. Step 6: Final answer
    x = 1,257,440,387.40

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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.