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Finding the Fourth Proportional to 657,648.40, 986,472.60 and 551,360.20

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Solution

The fourth proportional to 657,648.40, 986,472.60 and 551,360.20 is: 827,040.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,648.40 : 986,472.60 = 551,360.20 : x
  2. Step 2: Convert to fraction form
    657,648.40/986,472.60 = 551,360.20/x
  3. Step 3: Cross multiply
    657,648.40x = 986,472.60 × 551,360.20
  4. Step 4: Simplify right side
    657,648.40x = 543,901,730,030.52
  5. Step 5: Solve for x
    x = 543,901,730,030.52/657,648.40
  6. Step 6: Final answer
    x = 827,040.30

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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.