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Finding the Fourth Proportional to 559,417.20, 838,469.70 and 293,040.60

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Solution

The fourth proportional to 559,417.20, 838,469.70 and 293,040.60 is: 439,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,417.20 : 838,469.70 = 293,040.60 : x
  2. Step 2: Convert to fraction form
    559,417.20/838,469.70 = 293,040.60/x
  3. Step 3: Cross multiply
    559,417.20x = 838,469.70 × 293,040.60
  4. Step 4: Simplify right side
    559,417.20x = 245,705,663,969.82
  5. Step 5: Solve for x
    x = 245,705,663,969.82/559,417.20
  6. Step 6: Final answer
    x = 439,217.21

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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.