Home / 687,299,555.42-948,673,249.52-449,180,560.92

Finding the Fourth Proportional to 687,299,555.42, 948,673,249.52 and 449,180,560.92

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Solution

The fourth proportional to 687,299,555.42, 948,673,249.52 and 449,180,560.92 is: 619,999,793.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,299,555.42 : 948,673,249.52 = 449,180,560.92 : x
  2. Step 2: Convert to fraction form
    687,299,555.42/948,673,249.52 = 449,180,560.92/x
  3. Step 3: Cross multiply
    687,299,555.42x = 948,673,249.52 × 449,180,560.92
  4. Step 4: Simplify right side
    687,299,555.42x = 426,125,582,349,192,704
  5. Step 5: Solve for x
    x = 426,125,582,349,192,704/687,299,555.42
  6. Step 6: Final answer
    x = 619,999,793.38

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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.