Home / 851,216.81-1,274,572.61-513,806.45

Finding the Fourth Proportional to 851,216.81, 1,274,572.61 and 513,806.45

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Solution

The fourth proportional to 851,216.81, 1,274,572.61 and 513,806.45 is: 769,349.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,216.81 : 1,274,572.61 = 513,806.45 : x
  2. Step 2: Convert to fraction form
    851,216.81/1,274,572.61 = 513,806.45/x
  3. Step 3: Cross multiply
    851,216.81x = 1,274,572.61 × 513,806.45
  4. Step 4: Simplify right side
    851,216.81x = 654,883,625,442.30
  5. Step 5: Solve for x
    x = 654,883,625,442.30/851,216.81
  6. Step 6: Final answer
    x = 769,349.97

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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.