Home / 770,389.60-1,155,249.65-365,697.78

Finding the Fourth Proportional to 770,389.60, 1,155,249.65 and 365,697.78

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Solution

The fourth proportional to 770,389.60, 1,155,249.65 and 365,697.78 is: 548,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,389.60 : 1,155,249.65 = 365,697.78 : x
  2. Step 2: Convert to fraction form
    770,389.60/1,155,249.65 = 365,697.78/x
  3. Step 3: Cross multiply
    770,389.60x = 1,155,249.65 × 365,697.78
  4. Step 4: Simplify right side
    770,389.60x = 422,472,232,350.78
  5. Step 5: Solve for x
    x = 422,472,232,350.78/770,389.60
  6. Step 6: Final answer
    x = 548,387.77

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1.5x scale

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.