Home / 690,115.23-1,035,338.94-290,870.19

Finding the Fourth Proportional to 690,115.23, 1,035,338.94 and 290,870.19

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Solution

The fourth proportional to 690,115.23, 1,035,338.94 and 290,870.19 is: 436,375.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,115.23 : 1,035,338.94 = 290,870.19 : x
  2. Step 2: Convert to fraction form
    690,115.23/1,035,338.94 = 290,870.19/x
  3. Step 3: Cross multiply
    690,115.23x = 1,035,338.94 × 290,870.19
  4. Step 4: Simplify right side
    690,115.23x = 301,149,234,192.20
  5. Step 5: Solve for x
    x = 301,149,234,192.20/690,115.23
  6. Step 6: Final answer
    x = 436,375.29

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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.