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Finding the Fourth Proportional to 716,675.56, 988,987.48 and 394,355.52

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Solution

The fourth proportional to 716,675.56, 988,987.48 and 394,355.52 is: 544,196.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,675.56 : 988,987.48 = 394,355.52 : x
  2. Step 2: Convert to fraction form
    716,675.56/988,987.48 = 394,355.52/x
  3. Step 3: Cross multiply
    716,675.56x = 988,987.48 × 394,355.52
  4. Step 4: Simplify right side
    716,675.56x = 390,012,671,948.89
  5. Step 5: Solve for x
    x = 390,012,671,948.89/716,675.56
  6. Step 6: Final answer
    x = 544,196.98

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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.