Home / 487,454,165.36-672,686,748.16-278,614,791.88

Finding the Fourth Proportional to 487,454,165.36, 672,686,748.16 and 278,614,791.88

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Solution

The fourth proportional to 487,454,165.36, 672,686,748.16 and 278,614,791.88 is: 384,488,412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,165.36 : 672,686,748.16 = 278,614,791.88 : x
  2. Step 2: Convert to fraction form
    487,454,165.36/672,686,748.16 = 278,614,791.88/x
  3. Step 3: Cross multiply
    487,454,165.36x = 672,686,748.16 × 278,614,791.88
  4. Step 4: Simplify right side
    487,454,165.36x = 187,420,478,339,032,352
  5. Step 5: Solve for x
    x = 187,420,478,339,032,352/487,454,165.36
  6. Step 6: Final answer
    x = 384,488,412.77

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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.