Home / 487,188,358.26-672,257,985.21-278,358,026.82

Finding the Fourth Proportional to 487,188,358.26, 672,257,985.21 and 278,358,026.82

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Solution

The fourth proportional to 487,188,358.26, 672,257,985.21 and 278,358,026.82 is: 384,098,681.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188,358.26 : 672,257,985.21 = 278,358,026.82 : x
  2. Step 2: Convert to fraction form
    487,188,358.26/672,257,985.21 = 278,358,026.82/x
  3. Step 3: Cross multiply
    487,188,358.26x = 672,257,985.21 × 278,358,026.82
  4. Step 4: Simplify right side
    487,188,358.26x = 187,128,406,277,044,352
  5. Step 5: Solve for x
    x = 187,128,406,277,044,352/487,188,358.26
  6. Step 6: Final answer
    x = 384,098,681.97

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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.