Home / 807,852.61-1,211,647.63-381,387.61

Finding the Fourth Proportional to 807,852.61, 1,211,647.63 and 381,387.61

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Solution

The fourth proportional to 807,852.61, 1,211,647.63 and 381,387.61 is: 572,019.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,852.61 : 1,211,647.63 = 381,387.61 : x
  2. Step 2: Convert to fraction form
    807,852.61/1,211,647.63 = 381,387.61/x
  3. Step 3: Cross multiply
    807,852.61x = 1,211,647.63 × 381,387.61
  4. Step 4: Simplify right side
    807,852.61x = 462,107,393,767.86
  5. Step 5: Solve for x
    x = 462,107,393,767.86/807,852.61
  6. Step 6: Final answer
    x = 572,019.44

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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.