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Finding the Fourth Proportional to 558,200.70, 837,301.05 and 509,211.90

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Solution

The fourth proportional to 558,200.70, 837,301.05 and 509,211.90 is: 763,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,200.70 : 837,301.05 = 509,211.90 : x
  2. Step 2: Convert to fraction form
    558,200.70/837,301.05 = 509,211.90/x
  3. Step 3: Cross multiply
    558,200.70x = 837,301.05 × 509,211.90
  4. Step 4: Simplify right side
    558,200.70x = 426,363,658,542.50
  5. Step 5: Solve for x
    x = 426,363,658,542.50/558,200.70
  6. Step 6: Final answer
    x = 763,817.85

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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.