Home / 1,427,389.40-2,140,972.86-528,408.20

Finding the Fourth Proportional to 1,427,389.40, 2,140,972.86 and 528,408.20

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Solution

The fourth proportional to 1,427,389.40, 2,140,972.86 and 528,408.20 is: 792,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,389.40 : 2,140,972.86 = 528,408.20 : x
  2. Step 2: Convert to fraction form
    1,427,389.40/2,140,972.86 = 528,408.20/x
  3. Step 3: Cross multiply
    1,427,389.40x = 2,140,972.86 × 528,408.20
  4. Step 4: Simplify right side
    1,427,389.40x = 1,131,307,615,201.45
  5. Step 5: Solve for x
    x = 1,131,307,615,201.45/1,427,389.40
  6. Step 6: Final answer
    x = 792,571.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.