Home / 829,146.78-1,243,088.10-260,199.72

Finding the Fourth Proportional to 829,146.78, 1,243,088.10 and 260,199.72

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Solution

The fourth proportional to 829,146.78, 1,243,088.10 and 260,199.72 is: 390,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,146.78 : 1,243,088.10 = 260,199.72 : x
  2. Step 2: Convert to fraction form
    829,146.78/1,243,088.10 = 260,199.72/x
  3. Step 3: Cross multiply
    829,146.78x = 1,243,088.10 × 260,199.72
  4. Step 4: Simplify right side
    829,146.78x = 323,451,175,555.33
  5. Step 5: Solve for x
    x = 323,451,175,555.33/829,146.78
  6. Step 6: Final answer
    x = 390,101.23

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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.