Home / 1,291,248,474.80-1,936,872,712.20-1,191,479,284.40

Finding the Fourth Proportional to 1,291,248,474.80, 1,936,872,712.20 and 1,191,479,284.40

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Solution

The fourth proportional to 1,291,248,474.80, 1,936,872,712.20 and 1,191,479,284.40 is: 1,787,218,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,248,474.80 : 1,936,872,712.20 = 1,191,479,284.40 : x
  2. Step 2: Convert to fraction form
    1,291,248,474.80/1,936,872,712.20 = 1,191,479,284.40/x
  3. Step 3: Cross multiply
    1,291,248,474.80x = 1,936,872,712.20 × 1,191,479,284.40
  4. Step 4: Simplify right side
    1,291,248,474.80x = 2,307,743,713,105,943,552
  5. Step 5: Solve for x
    x = 2,307,743,713,105,943,552/1,291,248,474.80
  6. Step 6: Final answer
    x = 1,787,218,926.60

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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.