Home / 915,258.30-1,372,872.74-284,172.72

Finding the Fourth Proportional to 915,258.30, 1,372,872.74 and 284,172.72

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Solution

The fourth proportional to 915,258.30, 1,372,872.74 and 284,172.72 is: 426,254.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,258.30 : 1,372,872.74 = 284,172.72 : x
  2. Step 2: Convert to fraction form
    915,258.30/1,372,872.74 = 284,172.72/x
  3. Step 3: Cross multiply
    915,258.30x = 1,372,872.74 × 284,172.72
  4. Step 4: Simplify right side
    915,258.30x = 390,132,979,318.79
  5. Step 5: Solve for x
    x = 390,132,979,318.79/915,258.30
  6. Step 6: Final answer
    x = 426,254.51

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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.