Home / 816,061.20-1,224,091.80-343,280.40

Finding the Fourth Proportional to 816,061.20, 1,224,091.80 and 343,280.40

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Solution

The fourth proportional to 816,061.20, 1,224,091.80 and 343,280.40 is: 514,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,061.20 : 1,224,091.80 = 343,280.40 : x
  2. Step 2: Convert to fraction form
    816,061.20/1,224,091.80 = 343,280.40/x
  3. Step 3: Cross multiply
    816,061.20x = 1,224,091.80 × 343,280.40
  4. Step 4: Simplify right side
    816,061.20x = 420,206,722,740.72
  5. Step 5: Solve for x
    x = 420,206,722,740.72/816,061.20
  6. Step 6: Final answer
    x = 514,920.60

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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.