Home / 680,005.20-1,019,319.12-342,024.48

Finding the Fourth Proportional to 680,005.20, 1,019,319.12 and 342,024.48

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Solution

The fourth proportional to 680,005.20, 1,019,319.12 and 342,024.48 is: 512,690.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,005.20 : 1,019,319.12 = 342,024.48 : x
  2. Step 2: Convert to fraction form
    680,005.20/1,019,319.12 = 342,024.48/x
  3. Step 3: Cross multiply
    680,005.20x = 1,019,319.12 × 342,024.48
  4. Step 4: Simplify right side
    680,005.20x = 348,632,091,972.06
  5. Step 5: Solve for x
    x = 348,632,091,972.06/680,005.20
  6. Step 6: Final answer
    x = 512,690.33

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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.