Home / 1,866,251,146.80-2,799,376,720.20-639,011,722.80

Finding the Fourth Proportional to 1,866,251,146.80, 2,799,376,720.20 and 639,011,722.80

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Solution

The fourth proportional to 1,866,251,146.80, 2,799,376,720.20 and 639,011,722.80 is: 958,517,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866,251,146.80 : 2,799,376,720.20 = 639,011,722.80 : x
  2. Step 2: Convert to fraction form
    1,866,251,146.80/2,799,376,720.20 = 639,011,722.80/x
  3. Step 3: Cross multiply
    1,866,251,146.80x = 2,799,376,720.20 × 639,011,722.80
  4. Step 4: Simplify right side
    1,866,251,146.80x = 1,788,834,540,741,215,232
  5. Step 5: Solve for x
    x = 1,788,834,540,741,215,232/1,866,251,146.80
  6. Step 6: Final answer
    x = 958,517,584.20

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Double scale
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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.