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Finding the Fourth Proportional to 407,999.55, 611,999.33 and 362,509.95

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Solution

The fourth proportional to 407,999.55, 611,999.33 and 362,509.95 is: 543,764.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,999.55 : 611,999.33 = 362,509.95 : x
  2. Step 2: Convert to fraction form
    407,999.55/611,999.33 = 362,509.95/x
  3. Step 3: Cross multiply
    407,999.55x = 611,999.33 × 362,509.95
  4. Step 4: Simplify right side
    407,999.55x = 221,855,844,705.78
  5. Step 5: Solve for x
    x = 221,855,844,705.78/407,999.55
  6. Step 6: Final answer
    x = 543,764.93

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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.