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Finding the Fourth Proportional to 839,649, 1,158,698.40 and 457,672.44

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Solution

The fourth proportional to 839,649, 1,158,698.40 and 457,672.44 is: 631,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,649 : 1,158,698.40 = 457,672.44 : x
  2. Step 2: Convert to fraction form
    839,649/1,158,698.40 = 457,672.44/x
  3. Step 3: Cross multiply
    839,649x = 1,158,698.40 × 457,672.44
  4. Step 4: Simplify right side
    839,649x = 530,304,323,952.10
  5. Step 5: Solve for x
    x = 530,304,323,952.10/839,649
  6. Step 6: Final answer
    x = 631,578.58

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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.