Home / 487,502,114.40-672,752,925.36-278,662,781.28

Finding the Fourth Proportional to 487,502,114.40, 672,752,925.36 and 278,662,781.28

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Solution

The fourth proportional to 487,502,114.40, 672,752,925.36 and 278,662,781.28 is: 384,554,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,502,114.40 : 672,752,925.36 = 278,662,781.28 : x
  2. Step 2: Convert to fraction form
    487,502,114.40/672,752,925.36 = 278,662,781.28/x
  3. Step 3: Cross multiply
    487,502,114.40x = 672,752,925.36 × 278,662,781.28
  4. Step 4: Simplify right side
    487,502,114.40x = 187,471,201,295,073,824
  5. Step 5: Solve for x
    x = 187,471,201,295,073,824/487,502,114.40
  6. Step 6: Final answer
    x = 384,554,642.45

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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.