Home / 1,278,434,252.80-1,919,086,269.90-988,586,331.40

Finding the Fourth Proportional to 1,278,434,252.80, 1,919,086,269.90 and 988,586,331.40

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Solution

The fourth proportional to 1,278,434,252.80, 1,919,086,269.90 and 988,586,331.40 is: 1,483,989,067.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,434,252.80 : 1,919,086,269.90 = 988,586,331.40 : x
  2. Step 2: Convert to fraction form
    1,278,434,252.80/1,919,086,269.90 = 988,586,331.40/x
  3. Step 3: Cross multiply
    1,278,434,252.80x = 1,919,086,269.90 × 988,586,331.40
  4. Step 4: Simplify right side
    1,278,434,252.80x = 1,897,182,455,200,551,168
  5. Step 5: Solve for x
    x = 1,897,182,455,200,551,168/1,278,434,252.80
  6. Step 6: Final answer
    x = 1,483,989,067.91

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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.