Home / 679,788.09-1,019,680.30-253,314.20

Finding the Fourth Proportional to 679,788.09, 1,019,680.30 and 253,314.20

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Solution

The fourth proportional to 679,788.09, 1,019,680.30 and 253,314.20 is: 379,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,788.09 : 1,019,680.30 = 253,314.20 : x
  2. Step 2: Convert to fraction form
    679,788.09/1,019,680.30 = 253,314.20/x
  3. Step 3: Cross multiply
    679,788.09x = 1,019,680.30 × 253,314.20
  4. Step 4: Simplify right side
    679,788.09x = 258,299,501,366.18
  5. Step 5: Solve for x
    x = 258,299,501,366.18/679,788.09
  6. Step 6: Final answer
    x = 379,970.62

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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.