Home / 487,454,150.35-672,686,727.55-278,614,777.03

Finding the Fourth Proportional to 487,454,150.35, 672,686,727.55 and 278,614,777.03

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Solution

The fourth proportional to 487,454,150.35, 672,686,727.55 and 278,614,777.03 is: 384,488,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,150.35 : 672,686,727.55 = 278,614,777.03 : x
  2. Step 2: Convert to fraction form
    487,454,150.35/672,686,727.55 = 278,614,777.03/x
  3. Step 3: Cross multiply
    487,454,150.35x = 672,686,727.55 × 278,614,777.03
  4. Step 4: Simplify right side
    487,454,150.35x = 187,420,462,605,990,496
  5. Step 5: Solve for x
    x = 187,420,462,605,990,496/487,454,150.35
  6. Step 6: Final answer
    x = 384,488,392.34

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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.