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Finding the Fourth Proportional to 661,980, 913,551.84 and 360,193.44

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Solution

The fourth proportional to 661,980, 913,551.84 and 360,193.44 is: 497,077.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,980 : 913,551.84 = 360,193.44 : x
  2. Step 2: Convert to fraction form
    661,980/913,551.84 = 360,193.44/x
  3. Step 3: Cross multiply
    661,980x = 913,551.84 × 360,193.44
  4. Step 4: Simplify right side
    661,980x = 329,055,379,867.93
  5. Step 5: Solve for x
    x = 329,055,379,867.93/661,980
  6. Step 6: Final answer
    x = 497,077.52

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1.5x scale

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.