Home / 678,431.70-1,017,647.55-359,567.10

Finding the Fourth Proportional to 678,431.70, 1,017,647.55 and 359,567.10

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Solution

The fourth proportional to 678,431.70, 1,017,647.55 and 359,567.10 is: 539,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,431.70 : 1,017,647.55 = 359,567.10 : x
  2. Step 2: Convert to fraction form
    678,431.70/1,017,647.55 = 359,567.10/x
  3. Step 3: Cross multiply
    678,431.70x = 1,017,647.55 × 359,567.10
  4. Step 4: Simplify right side
    678,431.70x = 365,912,578,375.61
  5. Step 5: Solve for x
    x = 365,912,578,375.61/678,431.70
  6. Step 6: Final answer
    x = 539,350.65

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Similar ratio
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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.