Home / 1,138,625.12-1,571,246.16-629,314.40

Finding the Fourth Proportional to 1,138,625.12, 1,571,246.16 and 629,314.40

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Solution

The fourth proportional to 1,138,625.12, 1,571,246.16 and 629,314.40 is: 868,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,625.12 : 1,571,246.16 = 629,314.40 : x
  2. Step 2: Convert to fraction form
    1,138,625.12/1,571,246.16 = 629,314.40/x
  3. Step 3: Cross multiply
    1,138,625.12x = 1,571,246.16 × 629,314.40
  4. Step 4: Simplify right side
    1,138,625.12x = 988,807,834,432.70
  5. Step 5: Solve for x
    x = 988,807,834,432.70/1,138,625.12
  6. Step 6: Final answer
    x = 868,422.64

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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.