Home / 657,911.16-986,071.52-320,446.13

Finding the Fourth Proportional to 657,911.16, 986,071.52 and 320,446.13

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Solution

The fourth proportional to 657,911.16, 986,071.52 and 320,446.13 is: 480,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,911.16 : 986,071.52 = 320,446.13 : x
  2. Step 2: Convert to fraction form
    657,911.16/986,071.52 = 320,446.13/x
  3. Step 3: Cross multiply
    657,911.16x = 986,071.52 × 320,446.13
  4. Step 4: Simplify right side
    657,911.16x = 315,982,798,357.98
  5. Step 5: Solve for x
    x = 315,982,798,357.98/657,911.16
  6. Step 6: Final answer
    x = 480,281.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.