Home / 687,299,552.42-948,673,245.38-449,180,557.92

Finding the Fourth Proportional to 687,299,552.42, 948,673,245.38 and 449,180,557.92

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Solution

The fourth proportional to 687,299,552.42, 948,673,245.38 and 449,180,557.92 is: 619,999,789.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,299,552.42 : 948,673,245.38 = 449,180,557.92 : x
  2. Step 2: Convert to fraction form
    687,299,552.42/948,673,245.38 = 449,180,557.92/x
  3. Step 3: Cross multiply
    687,299,552.42x = 948,673,245.38 × 449,180,557.92
  4. Step 4: Simplify right side
    687,299,552.42x = 426,125,577,641,319,552
  5. Step 5: Solve for x
    x = 426,125,577,641,319,552/687,299,552.42
  6. Step 6: Final answer
    x = 619,999,789.24

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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.