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Finding the Fourth Proportional to 822,969.80, 1,234,454.70 and 717,993.80

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Solution

The fourth proportional to 822,969.80, 1,234,454.70 and 717,993.80 is: 1,076,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,969.80 : 1,234,454.70 = 717,993.80 : x
  2. Step 2: Convert to fraction form
    822,969.80/1,234,454.70 = 717,993.80/x
  3. Step 3: Cross multiply
    822,969.80x = 1,234,454.70 × 717,993.80
  4. Step 4: Simplify right side
    822,969.80x = 886,330,820,980.86
  5. Step 5: Solve for x
    x = 886,330,820,980.86/822,969.80
  6. Step 6: Final answer
    x = 1,076,990.70

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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.