Home / 487,188,359.26-672,257,986.59-278,358,027.82

Finding the Fourth Proportional to 487,188,359.26, 672,257,986.59 and 278,358,027.82

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Solution

The fourth proportional to 487,188,359.26, 672,257,986.59 and 278,358,027.82 is: 384,098,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188,359.26 : 672,257,986.59 = 278,358,027.82 : x
  2. Step 2: Convert to fraction form
    487,188,359.26/672,257,986.59 = 278,358,027.82/x
  3. Step 3: Cross multiply
    487,188,359.26x = 672,257,986.59 × 278,358,027.82
  4. Step 4: Simplify right side
    487,188,359.26x = 187,128,407,333,436,416
  5. Step 5: Solve for x
    x = 187,128,407,333,436,416/487,188,359.26
  6. Step 6: Final answer
    x = 384,098,683.35

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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.