Home / 865,870.20-1,299,010.10-274,894.20

Finding the Fourth Proportional to 865,870.20, 1,299,010.10 and 274,894.20

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Solution

The fourth proportional to 865,870.20, 1,299,010.10 and 274,894.20 is: 412,406.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,870.20 : 1,299,010.10 = 274,894.20 : x
  2. Step 2: Convert to fraction form
    865,870.20/1,299,010.10 = 274,894.20/x
  3. Step 3: Cross multiply
    865,870.20x = 1,299,010.10 × 274,894.20
  4. Step 4: Simplify right side
    865,870.20x = 357,090,342,231.42
  5. Step 5: Solve for x
    x = 357,090,342,231.42/865,870.20
  6. Step 6: Final answer
    x = 412,406.32

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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.