Home / 1,218,772,671.90-1,682,421,200.40-822,832,002.69

Finding the Fourth Proportional to 1,218,772,671.90, 1,682,421,200.40 and 822,832,002.69

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Solution

The fourth proportional to 1,218,772,671.90, 1,682,421,200.40 and 822,832,002.69 is: 1,135,855,797.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,772,671.90 : 1,682,421,200.40 = 822,832,002.69 : x
  2. Step 2: Convert to fraction form
    1,218,772,671.90/1,682,421,200.40 = 822,832,002.69/x
  3. Step 3: Cross multiply
    1,218,772,671.90x = 1,682,421,200.40 × 822,832,002.69
  4. Step 4: Simplify right side
    1,218,772,671.90x = 1,384,350,005,693,245,952
  5. Step 5: Solve for x
    x = 1,384,350,005,693,245,952/1,218,772,671.90
  6. Step 6: Final answer
    x = 1,135,855,797.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.