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Finding the Fourth Proportional to 665,530.59, 918,432.50 and 363,724.59

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Solution

The fourth proportional to 665,530.59, 918,432.50 and 363,724.59 is: 501,940.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,530.59 : 918,432.50 = 363,724.59 : x
  2. Step 2: Convert to fraction form
    665,530.59/918,432.50 = 363,724.59/x
  3. Step 3: Cross multiply
    665,530.59x = 918,432.50 × 363,724.59
  4. Step 4: Simplify right side
    665,530.59x = 334,056,482,686.55
  5. Step 5: Solve for x
    x = 334,056,482,686.55/665,530.59
  6. Step 6: Final answer
    x = 501,940.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.