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Finding the Fourth Proportional to 578,040.60, 866,715.30 and 298,104.60

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Solution

The fourth proportional to 578,040.60, 866,715.30 and 298,104.60 is: 446,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,040.60 : 866,715.30 = 298,104.60 : x
  2. Step 2: Convert to fraction form
    578,040.60/866,715.30 = 298,104.60/x
  3. Step 3: Cross multiply
    578,040.60x = 866,715.30 × 298,104.60
  4. Step 4: Simplify right side
    578,040.60x = 258,371,817,820.38
  5. Step 5: Solve for x
    x = 258,371,817,820.38/578,040.60
  6. Step 6: Final answer
    x = 446,978.67

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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.