Home / 1,278,278,499.42-1,915,722,673.65-656,468,614.56

Finding the Fourth Proportional to 1,278,278,499.42, 1,915,722,673.65 and 656,468,614.56

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Solution

The fourth proportional to 1,278,278,499.42, 1,915,722,673.65 and 656,468,614.56 is: 983,832,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,278,499.42 : 1,915,722,673.65 = 656,468,614.56 : x
  2. Step 2: Convert to fraction form
    1,278,278,499.42/1,915,722,673.65 = 656,468,614.56/x
  3. Step 3: Cross multiply
    1,278,278,499.42x = 1,915,722,673.65 × 656,468,614.56
  4. Step 4: Simplify right side
    1,278,278,499.42x = 1,257,611,809,452,194,560
  5. Step 5: Solve for x
    x = 1,257,611,809,452,194,560/1,278,278,499.42
  6. Step 6: Final answer
    x = 983,832,404.30

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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.