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Finding the Fourth Proportional to 657,603.20, 986,404.80 and 303,309.20

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Solution

The fourth proportional to 657,603.20, 986,404.80 and 303,309.20 is: 454,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,603.20 : 986,404.80 = 303,309.20 : x
  2. Step 2: Convert to fraction form
    657,603.20/986,404.80 = 303,309.20/x
  3. Step 3: Cross multiply
    657,603.20x = 986,404.80 × 303,309.20
  4. Step 4: Simplify right side
    657,603.20x = 299,185,650,764.16
  5. Step 5: Solve for x
    x = 299,185,650,764.16/657,603.20
  6. Step 6: Final answer
    x = 454,963.80

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Similar ratio
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1.5x scale

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.