Home / 487,502,124.40-672,752,939.16-278,662,791.28

Finding the Fourth Proportional to 487,502,124.40, 672,752,939.16 and 278,662,791.28

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Solution

The fourth proportional to 487,502,124.40, 672,752,939.16 and 278,662,791.28 is: 384,554,656.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,502,124.40 : 672,752,939.16 = 278,662,791.28 : x
  2. Step 2: Convert to fraction form
    487,502,124.40/672,752,939.16 = 278,662,791.28/x
  3. Step 3: Cross multiply
    487,502,124.40x = 672,752,939.16 × 278,662,791.28
  4. Step 4: Simplify right side
    487,502,124.40x = 187,471,211,868,149,600
  5. Step 5: Solve for x
    x = 187,471,211,868,149,600/487,502,124.40
  6. Step 6: Final answer
    x = 384,554,656.25

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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.