Home / 1,278,002,620.80-1,915,492,276.80-664,270,934.40

Finding the Fourth Proportional to 1,278,002,620.80, 1,915,492,276.80 and 664,270,934.40

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Solution

The fourth proportional to 1,278,002,620.80, 1,915,492,276.80 and 664,270,934.40 is: 995,620,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,002,620.80 : 1,915,492,276.80 = 664,270,934.40 : x
  2. Step 2: Convert to fraction form
    1,278,002,620.80/1,915,492,276.80 = 664,270,934.40/x
  3. Step 3: Cross multiply
    1,278,002,620.80x = 1,915,492,276.80 × 664,270,934.40
  4. Step 4: Simplify right side
    1,278,002,620.80x = 1,272,405,844,545,919,488
  5. Step 5: Solve for x
    x = 1,272,405,844,545,919,488/1,278,002,620.80
  6. Step 6: Final answer
    x = 995,620,684.84

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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.