Home / 1,420,865.40-2,131,248.96-355,916.64

Finding the Fourth Proportional to 1,420,865.40, 2,131,248.96 and 355,916.64

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Solution

The fourth proportional to 1,420,865.40, 2,131,248.96 and 355,916.64 is: 533,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,865.40 : 2,131,248.96 = 355,916.64 : x
  2. Step 2: Convert to fraction form
    1,420,865.40/2,131,248.96 = 355,916.64/x
  3. Step 3: Cross multiply
    1,420,865.40x = 2,131,248.96 × 355,916.64
  4. Step 4: Simplify right side
    1,420,865.40x = 758,546,968,846.70
  5. Step 5: Solve for x
    x = 758,546,968,846.70/1,420,865.40
  6. Step 6: Final answer
    x = 533,862.65

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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.