Home / 770,391.60-1,155,252.65-365,699.78

Finding the Fourth Proportional to 770,391.60, 1,155,252.65 and 365,699.78

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Solution

The fourth proportional to 770,391.60, 1,155,252.65 and 365,699.78 is: 548,390.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,391.60 : 1,155,252.65 = 365,699.78 : x
  2. Step 2: Convert to fraction form
    770,391.60/1,155,252.65 = 365,699.78/x
  3. Step 3: Cross multiply
    770,391.60x = 1,155,252.65 × 365,699.78
  4. Step 4: Simplify right side
    770,391.60x = 422,475,639,949.42
  5. Step 5: Solve for x
    x = 422,475,639,949.42/770,391.60
  6. Step 6: Final answer
    x = 548,390.77

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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.