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Finding the Fourth Proportional to 663,303.26, 915,361.54 and 376,839.07

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Solution

The fourth proportional to 663,303.26, 915,361.54 and 376,839.07 is: 520,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,303.26 : 915,361.54 = 376,839.07 : x
  2. Step 2: Convert to fraction form
    663,303.26/915,361.54 = 376,839.07/x
  3. Step 3: Cross multiply
    663,303.26x = 915,361.54 × 376,839.07
  4. Step 4: Simplify right side
    663,303.26x = 344,943,988,216.87
  5. Step 5: Solve for x
    x = 344,943,988,216.87/663,303.26
  6. Step 6: Final answer
    x = 520,039.64

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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.