Home / 487,188,357.51-672,257,984.18-278,358,026.07

Finding the Fourth Proportional to 487,188,357.51, 672,257,984.18 and 278,358,026.07

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Solution

The fourth proportional to 487,188,357.51, 672,257,984.18 and 278,358,026.07 is: 384,098,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188,357.51 : 672,257,984.18 = 278,358,026.07 : x
  2. Step 2: Convert to fraction form
    487,188,357.51/672,257,984.18 = 278,358,026.07/x
  3. Step 3: Cross multiply
    487,188,357.51x = 672,257,984.18 × 278,358,026.07
  4. Step 4: Simplify right side
    487,188,357.51x = 187,128,405,484,750,272
  5. Step 5: Solve for x
    x = 187,128,405,484,750,272/487,188,357.51
  6. Step 6: Final answer
    x = 384,098,680.93

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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.