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Finding the Fourth Proportional to 490,572.05, 735,715.91 and 190,985.85

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Solution

The fourth proportional to 490,572.05, 735,715.91 and 190,985.85 is: 286,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,572.05 : 735,715.91 = 190,985.85 : x
  2. Step 2: Convert to fraction form
    490,572.05/735,715.91 = 190,985.85/x
  3. Step 3: Cross multiply
    490,572.05x = 735,715.91 × 190,985.85
  4. Step 4: Simplify right side
    490,572.05x = 140,511,328,907.34
  5. Step 5: Solve for x
    x = 140,511,328,907.34/490,572.05
  6. Step 6: Final answer
    x = 286,423.43

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1.5x scale

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.