Home / 487,454,151.35-672,686,728.93-278,614,778.03

Finding the Fourth Proportional to 487,454,151.35, 672,686,728.93 and 278,614,778.03

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Solution

The fourth proportional to 487,454,151.35, 672,686,728.93 and 278,614,778.03 is: 384,488,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,151.35 : 672,686,728.93 = 278,614,778.03 : x
  2. Step 2: Convert to fraction form
    487,454,151.35/672,686,728.93 = 278,614,778.03/x
  3. Step 3: Cross multiply
    487,454,151.35x = 672,686,728.93 × 278,614,778.03
  4. Step 4: Simplify right side
    487,454,151.35x = 187,420,463,664,558,688
  5. Step 5: Solve for x
    x = 187,420,463,664,558,688/487,454,151.35
  6. Step 6: Final answer
    x = 384,488,393.72

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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.