Home / 814,319.55-1,220,684.91-387,740.80

Finding the Fourth Proportional to 814,319.55, 1,220,684.91 and 387,740.80

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Solution

The fourth proportional to 814,319.55, 1,220,684.91 and 387,740.80 is: 581,232.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,319.55 : 1,220,684.91 = 387,740.80 : x
  2. Step 2: Convert to fraction form
    814,319.55/1,220,684.91 = 387,740.80/x
  3. Step 3: Cross multiply
    814,319.55x = 1,220,684.91 × 387,740.80
  4. Step 4: Simplify right side
    814,319.55x = 473,309,341,280.50
  5. Step 5: Solve for x
    x = 473,309,341,280.50/814,319.55
  6. Step 6: Final answer
    x = 581,232.93

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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.