Home / 519,928.80-780,002.55-295,105.20

Finding the Fourth Proportional to 519,928.80, 780,002.55 and 295,105.20

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Solution

The fourth proportional to 519,928.80, 780,002.55 and 295,105.20 is: 442,719.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,928.80 : 780,002.55 = 295,105.20 : x
  2. Step 2: Convert to fraction form
    519,928.80/780,002.55 = 295,105.20/x
  3. Step 3: Cross multiply
    519,928.80x = 780,002.55 × 295,105.20
  4. Step 4: Simplify right side
    519,928.80x = 230,182,808,518.26
  5. Step 5: Solve for x
    x = 230,182,808,518.26/519,928.80
  6. Step 6: Final answer
    x = 442,719.87

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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.