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Finding the Fourth Proportional to 716,675.58, 988,987.50 and 394,355.52

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Solution

The fourth proportional to 716,675.58, 988,987.50 and 394,355.52 is: 544,196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,675.58 : 988,987.50 = 394,355.52 : x
  2. Step 2: Convert to fraction form
    716,675.58/988,987.50 = 394,355.52/x
  3. Step 3: Cross multiply
    716,675.58x = 988,987.50 × 394,355.52
  4. Step 4: Simplify right side
    716,675.58x = 390,012,679,836
  5. Step 5: Solve for x
    x = 390,012,679,836/716,675.58
  6. Step 6: Final answer
    x = 544,196.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.