Home / 778,541.40-1,167,812.10-279,955.80

Finding the Fourth Proportional to 778,541.40, 1,167,812.10 and 279,955.80

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Solution

The fourth proportional to 778,541.40, 1,167,812.10 and 279,955.80 is: 419,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,541.40 : 1,167,812.10 = 279,955.80 : x
  2. Step 2: Convert to fraction form
    778,541.40/1,167,812.10 = 279,955.80/x
  3. Step 3: Cross multiply
    778,541.40x = 1,167,812.10 × 279,955.80
  4. Step 4: Simplify right side
    778,541.40x = 326,935,770,705.18
  5. Step 5: Solve for x
    x = 326,935,770,705.18/778,541.40
  6. Step 6: Final answer
    x = 419,933.70

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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.