Home / 728,061.40-1,091,703.30-306,861.40

Finding the Fourth Proportional to 728,061.40, 1,091,703.30 and 306,861.40

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Solution

The fourth proportional to 728,061.40, 1,091,703.30 and 306,861.40 is: 460,128.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,061.40 : 1,091,703.30 = 306,861.40 : x
  2. Step 2: Convert to fraction form
    728,061.40/1,091,703.30 = 306,861.40/x
  3. Step 3: Cross multiply
    728,061.40x = 1,091,703.30 × 306,861.40
  4. Step 4: Simplify right side
    728,061.40x = 335,001,603,022.62
  5. Step 5: Solve for x
    x = 335,001,603,022.62/728,061.40
  6. Step 6: Final answer
    x = 460,128.23

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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.