Home / 1,283,428.60-1,925,142.90-1,214,999.80

Finding the Fourth Proportional to 1,283,428.60, 1,925,142.90 and 1,214,999.80

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Solution

The fourth proportional to 1,283,428.60, 1,925,142.90 and 1,214,999.80 is: 1,822,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,428.60 : 1,925,142.90 = 1,214,999.80 : x
  2. Step 2: Convert to fraction form
    1,283,428.60/1,925,142.90 = 1,214,999.80/x
  3. Step 3: Cross multiply
    1,283,428.60x = 1,925,142.90 × 1,214,999.80
  4. Step 4: Simplify right side
    1,283,428.60x = 2,339,048,238,471.42
  5. Step 5: Solve for x
    x = 2,339,048,238,471.42/1,283,428.60
  6. Step 6: Final answer
    x = 1,822,499.70

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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.