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Finding the Fourth Proportional to 661,268.60, 912,559.74 and 359,469.08

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Solution

The fourth proportional to 661,268.60, 912,559.74 and 359,469.08 is: 496,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,268.60 : 912,559.74 = 359,469.08 : x
  2. Step 2: Convert to fraction form
    661,268.60/912,559.74 = 359,469.08/x
  3. Step 3: Cross multiply
    661,268.60x = 912,559.74 × 359,469.08
  4. Step 4: Simplify right side
    661,268.60x = 328,037,010,182.84
  5. Step 5: Solve for x
    x = 328,037,010,182.84/661,268.60
  6. Step 6: Final answer
    x = 496,072.26

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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.