Home / 1,931,123.20-2,899,449.60-1,091,315.20

Finding the Fourth Proportional to 1,931,123.20, 2,899,449.60 and 1,091,315.20

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Solution

The fourth proportional to 1,931,123.20, 2,899,449.60 and 1,091,315.20 is: 1,638,535.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931,123.20 : 2,899,449.60 = 1,091,315.20 : x
  2. Step 2: Convert to fraction form
    1,931,123.20/2,899,449.60 = 1,091,315.20/x
  3. Step 3: Cross multiply
    1,931,123.20x = 2,899,449.60 × 1,091,315.20
  4. Step 4: Simplify right side
    1,931,123.20x = 3,164,213,420,113.92
  5. Step 5: Solve for x
    x = 3,164,213,420,113.92/1,931,123.20
  6. Step 6: Final answer
    x = 1,638,535.24

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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.