Home / 822,955.80-1,234,433.70-261,990.30

Finding the Fourth Proportional to 822,955.80, 1,234,433.70 and 261,990.30

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Solution

The fourth proportional to 822,955.80, 1,234,433.70 and 261,990.30 is: 392,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,955.80 : 1,234,433.70 = 261,990.30 : x
  2. Step 2: Convert to fraction form
    822,955.80/1,234,433.70 = 261,990.30/x
  3. Step 3: Cross multiply
    822,955.80x = 1,234,433.70 × 261,990.30
  4. Step 4: Simplify right side
    822,955.80x = 323,409,655,393.11
  5. Step 5: Solve for x
    x = 323,409,655,393.11/822,955.80
  6. Step 6: Final answer
    x = 392,985.45

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Double scale
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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.