Home / 1,215,000.40-1,822,500.60-505,537.60

Finding the Fourth Proportional to 1,215,000.40, 1,822,500.60 and 505,537.60

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Solution

The fourth proportional to 1,215,000.40, 1,822,500.60 and 505,537.60 is: 758,306.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,000.40 : 1,822,500.60 = 505,537.60 : x
  2. Step 2: Convert to fraction form
    1,215,000.40/1,822,500.60 = 505,537.60/x
  3. Step 3: Cross multiply
    1,215,000.40x = 1,822,500.60 × 505,537.60
  4. Step 4: Simplify right side
    1,215,000.40x = 921,342,579,322.56
  5. Step 5: Solve for x
    x = 921,342,579,322.56/1,215,000.40
  6. Step 6: Final answer
    x = 758,306.40

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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.