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Finding the Fourth Proportional to 415,069.93, 622,605.06 and 320,438.27

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Solution

The fourth proportional to 415,069.93, 622,605.06 and 320,438.27 is: 480,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,069.93 : 622,605.06 = 320,438.27 : x
  2. Step 2: Convert to fraction form
    415,069.93/622,605.06 = 320,438.27/x
  3. Step 3: Cross multiply
    415,069.93x = 622,605.06 × 320,438.27
  4. Step 4: Simplify right side
    415,069.93x = 199,506,488,319.65
  5. Step 5: Solve for x
    x = 199,506,488,319.65/415,069.93
  6. Step 6: Final answer
    x = 480,657.53

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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.