Home / 820,255.20-1,230,382.80-460,056.30

Finding the Fourth Proportional to 820,255.20, 1,230,382.80 and 460,056.30

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Solution

The fourth proportional to 820,255.20, 1,230,382.80 and 460,056.30 is: 690,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,255.20 : 1,230,382.80 = 460,056.30 : x
  2. Step 2: Convert to fraction form
    820,255.20/1,230,382.80 = 460,056.30/x
  3. Step 3: Cross multiply
    820,255.20x = 1,230,382.80 × 460,056.30
  4. Step 4: Simplify right side
    820,255.20x = 566,045,358,551.64
  5. Step 5: Solve for x
    x = 566,045,358,551.64/820,255.20
  6. Step 6: Final answer
    x = 690,084.45

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Similar ratio
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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.