Home / 747,716.40-1,121,574.60-665,047.80

Finding the Fourth Proportional to 747,716.40, 1,121,574.60 and 665,047.80

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Solution

The fourth proportional to 747,716.40, 1,121,574.60 and 665,047.80 is: 997,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,716.40 : 1,121,574.60 = 665,047.80 : x
  2. Step 2: Convert to fraction form
    747,716.40/1,121,574.60 = 665,047.80/x
  3. Step 3: Cross multiply
    747,716.40x = 1,121,574.60 × 665,047.80
  4. Step 4: Simplify right side
    747,716.40x = 745,900,720,265.88
  5. Step 5: Solve for x
    x = 745,900,720,265.88/747,716.40
  6. Step 6: Final answer
    x = 997,571.70

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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.