Home / 498,386.76-687,749.80-283,506.72

Finding the Fourth Proportional to 498,386.76, 687,749.80 and 283,506.72

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Solution

The fourth proportional to 498,386.76, 687,749.80 and 283,506.72 is: 391,225.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,386.76 : 687,749.80 = 283,506.72 : x
  2. Step 2: Convert to fraction form
    498,386.76/687,749.80 = 283,506.72/x
  3. Step 3: Cross multiply
    498,386.76x = 687,749.80 × 283,506.72
  4. Step 4: Simplify right side
    498,386.76x = 194,981,689,978.66
  5. Step 5: Solve for x
    x = 194,981,689,978.66/498,386.76
  6. Step 6: Final answer
    x = 391,225.66

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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.