Home / 658,096.80-985,176.90-391,720.20

Finding the Fourth Proportional to 658,096.80, 985,176.90 and 391,720.20

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Solution

The fourth proportional to 658,096.80, 985,176.90 and 391,720.20 is: 586,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,096.80 : 985,176.90 = 391,720.20 : x
  2. Step 2: Convert to fraction form
    658,096.80/985,176.90 = 391,720.20/x
  3. Step 3: Cross multiply
    658,096.80x = 985,176.90 × 391,720.20
  4. Step 4: Simplify right side
    658,096.80x = 385,913,692,303.38
  5. Step 5: Solve for x
    x = 385,913,692,303.38/658,096.80
  6. Step 6: Final answer
    x = 586,408.71

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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.