Home / 487,454,146.04-672,686,721.54-278,614,772.71

Finding the Fourth Proportional to 487,454,146.04, 672,686,721.54 and 278,614,772.71

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Solution

The fourth proportional to 487,454,146.04, 672,686,721.54 and 278,614,772.71 is: 384,488,386.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,146.04 : 672,686,721.54 = 278,614,772.71 : x
  2. Step 2: Convert to fraction form
    487,454,146.04/672,686,721.54 = 278,614,772.71/x
  3. Step 3: Cross multiply
    487,454,146.04x = 672,686,721.54 × 278,614,772.71
  4. Step 4: Simplify right side
    487,454,146.04x = 187,420,458,025,220,416
  5. Step 5: Solve for x
    x = 187,420,458,025,220,416/487,454,146.04
  6. Step 6: Final answer
    x = 384,488,386.34

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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.