Home / 487,454,148.13-672,686,724.44-278,614,774.87

Finding the Fourth Proportional to 487,454,148.13, 672,686,724.44 and 278,614,774.87

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Solution

The fourth proportional to 487,454,148.13, 672,686,724.44 and 278,614,774.87 is: 384,488,389.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,148.13 : 672,686,724.44 = 278,614,774.87 : x
  2. Step 2: Convert to fraction form
    487,454,148.13/672,686,724.44 = 278,614,774.87/x
  3. Step 3: Cross multiply
    487,454,148.13x = 672,686,724.44 × 278,614,774.87
  4. Step 4: Simplify right side
    487,454,148.13x = 187,420,460,287,888,352
  5. Step 5: Solve for x
    x = 187,420,460,287,888,352/487,454,148.13
  6. Step 6: Final answer
    x = 384,488,389.33

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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.