Home / 656,934.40-985,430.76-257,539.60

Finding the Fourth Proportional to 656,934.40, 985,430.76 and 257,539.60

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Solution

The fourth proportional to 656,934.40, 985,430.76 and 257,539.60 is: 386,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,934.40 : 985,430.76 = 257,539.60 : x
  2. Step 2: Convert to fraction form
    656,934.40/985,430.76 = 257,539.60/x
  3. Step 3: Cross multiply
    656,934.40x = 985,430.76 × 257,539.60
  4. Step 4: Simplify right side
    656,934.40x = 253,787,443,758.10
  5. Step 5: Solve for x
    x = 253,787,443,758.10/656,934.40
  6. Step 6: Final answer
    x = 386,320.83

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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.