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Finding the Fourth Proportional to 661,644, 913,075.74 and 359,844.48

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Solution

The fourth proportional to 661,644, 913,075.74 and 359,844.48 is: 496,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,644 : 913,075.74 = 359,844.48 : x
  2. Step 2: Convert to fraction form
    661,644/913,075.74 = 359,844.48/x
  3. Step 3: Cross multiply
    661,644x = 913,075.74 × 359,844.48
  4. Step 4: Simplify right side
    661,644x = 328,565,264,860.92
  5. Step 5: Solve for x
    x = 328,565,264,860.92/661,644
  6. Step 6: Final answer
    x = 496,589.20

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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.