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Finding the Fourth Proportional to 455,999.70, 683,999.55 and 123,575.70

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Solution

The fourth proportional to 455,999.70, 683,999.55 and 123,575.70 is: 185,363.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,999.70 : 683,999.55 = 123,575.70 : x
  2. Step 2: Convert to fraction form
    455,999.70/683,999.55 = 123,575.70/x
  3. Step 3: Cross multiply
    455,999.70x = 683,999.55 × 123,575.70
  4. Step 4: Simplify right side
    455,999.70x = 84,525,723,190.94
  5. Step 5: Solve for x
    x = 84,525,723,190.94/455,999.70
  6. Step 6: Final answer
    x = 185,363.55

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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.