Home / 765,120.21-1,147,820.42-315,595.85

Finding the Fourth Proportional to 765,120.21, 1,147,820.42 and 315,595.85

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Solution

The fourth proportional to 765,120.21, 1,147,820.42 and 315,595.85 is: 473,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,120.21 : 1,147,820.42 = 315,595.85 : x
  2. Step 2: Convert to fraction form
    765,120.21/1,147,820.42 = 315,595.85/x
  3. Step 3: Cross multiply
    765,120.21x = 1,147,820.42 × 315,595.85
  4. Step 4: Simplify right side
    765,120.21x = 362,247,360,828.41
  5. Step 5: Solve for x
    x = 362,247,360,828.41/765,120.21
  6. Step 6: Final answer
    x = 473,451.56

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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.