Home / 656,938.40-985,436.76-257,543.60

Finding the Fourth Proportional to 656,938.40, 985,436.76 and 257,543.60

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Solution

The fourth proportional to 656,938.40, 985,436.76 and 257,543.60 is: 386,326.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,938.40 : 985,436.76 = 257,543.60 : x
  2. Step 2: Convert to fraction form
    656,938.40/985,436.76 = 257,543.60/x
  3. Step 3: Cross multiply
    656,938.40x = 985,436.76 × 257,543.60
  4. Step 4: Simplify right side
    656,938.40x = 253,792,930,742.74
  5. Step 5: Solve for x
    x = 253,792,930,742.74/656,938.40
  6. Step 6: Final answer
    x = 386,326.83

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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.