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Finding the Fourth Proportional to 559,069.20, 838,603.80 and 381,922.20

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Solution

The fourth proportional to 559,069.20, 838,603.80 and 381,922.20 is: 572,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,069.20 : 838,603.80 = 381,922.20 : x
  2. Step 2: Convert to fraction form
    559,069.20/838,603.80 = 381,922.20/x
  3. Step 3: Cross multiply
    559,069.20x = 838,603.80 × 381,922.20
  4. Step 4: Simplify right side
    559,069.20x = 320,281,408,224.36
  5. Step 5: Solve for x
    x = 320,281,408,224.36/559,069.20
  6. Step 6: Final answer
    x = 572,883.30

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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.