Home / 1,138,750.40-1,571,408-629,422.40

Finding the Fourth Proportional to 1,138,750.40, 1,571,408 and 629,422.40

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Solution

The fourth proportional to 1,138,750.40, 1,571,408 and 629,422.40 is: 868,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,750.40 : 1,571,408 = 629,422.40 : x
  2. Step 2: Convert to fraction form
    1,138,750.40/1,571,408 = 629,422.40/x
  3. Step 3: Cross multiply
    1,138,750.40x = 1,571,408 × 629,422.40
  4. Step 4: Simplify right side
    1,138,750.40x = 989,079,394,739.20
  5. Step 5: Solve for x
    x = 989,079,394,739.20/1,138,750.40
  6. Step 6: Final answer
    x = 868,565.57

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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.