Home / 487,188,353.76-672,257,979-278,358,022.32

Finding the Fourth Proportional to 487,188,353.76, 672,257,979 and 278,358,022.32

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Solution

The fourth proportional to 487,188,353.76, 672,257,979 and 278,358,022.32 is: 384,098,675.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188,353.76 : 672,257,979 = 278,358,022.32 : x
  2. Step 2: Convert to fraction form
    487,188,353.76/672,257,979 = 278,358,022.32/x
  3. Step 3: Cross multiply
    487,188,353.76x = 672,257,979 × 278,358,022.32
  4. Step 4: Simplify right side
    487,188,353.76x = 187,128,401,523,280,096
  5. Step 5: Solve for x
    x = 187,128,401,523,280,096/487,188,353.76
  6. Step 6: Final answer
    x = 384,098,675.76

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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.