Home / 720,104.30-1,079,638.05-404,657.90

Finding the Fourth Proportional to 720,104.30, 1,079,638.05 and 404,657.90

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Solution

The fourth proportional to 720,104.30, 1,079,638.05 and 404,657.90 is: 606,695.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,104.30 : 1,079,638.05 = 404,657.90 : x
  2. Step 2: Convert to fraction form
    720,104.30/1,079,638.05 = 404,657.90/x
  3. Step 3: Cross multiply
    720,104.30x = 1,079,638.05 × 404,657.90
  4. Step 4: Simplify right side
    720,104.30x = 436,884,066,073.10
  5. Step 5: Solve for x
    x = 436,884,066,073.10/720,104.30
  6. Step 6: Final answer
    x = 606,695.54

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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.