Home / 745,451.40-1,118,186.82-212,989.80

Finding the Fourth Proportional to 745,451.40, 1,118,186.82 and 212,989.80

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Solution

The fourth proportional to 745,451.40, 1,118,186.82 and 212,989.80 is: 319,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,451.40 : 1,118,186.82 = 212,989.80 : x
  2. Step 2: Convert to fraction form
    745,451.40/1,118,186.82 = 212,989.80/x
  3. Step 3: Cross multiply
    745,451.40x = 1,118,186.82 × 212,989.80
  4. Step 4: Simplify right side
    745,451.40x = 238,162,387,154.44
  5. Step 5: Solve for x
    x = 238,162,387,154.44/745,451.40
  6. Step 6: Final answer
    x = 319,487.48

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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.