Home / 770,840.28-1,155,862.04-338,380.76

Finding the Fourth Proportional to 770,840.28, 1,155,862.04 and 338,380.76

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Solution

The fourth proportional to 770,840.28, 1,155,862.04 and 338,380.76 is: 507,396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,840.28 : 1,155,862.04 = 338,380.76 : x
  2. Step 2: Convert to fraction form
    770,840.28/1,155,862.04 = 338,380.76/x
  3. Step 3: Cross multiply
    770,840.28x = 1,155,862.04 × 338,380.76
  4. Step 4: Simplify right side
    770,840.28x = 391,121,475,550.35
  5. Step 5: Solve for x
    x = 391,121,475,550.35/770,840.28
  6. Step 6: Final answer
    x = 507,396.26

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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.