Home / 487,678.17-672,996.87-272,821.83

Finding the Fourth Proportional to 487,678.17, 672,996.87 and 272,821.83

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Solution

The fourth proportional to 487,678.17, 672,996.87 and 272,821.83 is: 376,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,678.17 : 672,996.87 = 272,821.83 : x
  2. Step 2: Convert to fraction form
    487,678.17/672,996.87 = 272,821.83/x
  3. Step 3: Cross multiply
    487,678.17x = 672,996.87 × 272,821.83
  4. Step 4: Simplify right side
    487,678.17x = 183,608,237,657.67
  5. Step 5: Solve for x
    x = 183,608,237,657.67/487,678.17
  6. Step 6: Final answer
    x = 376,494.68

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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.