Home / 1,318,623.65-1,978,012.11-509,012.66

Finding the Fourth Proportional to 1,318,623.65, 1,978,012.11 and 509,012.66

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Solution

The fourth proportional to 1,318,623.65, 1,978,012.11 and 509,012.66 is: 763,548.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,623.65 : 1,978,012.11 = 509,012.66 : x
  2. Step 2: Convert to fraction form
    1,318,623.65/1,978,012.11 = 509,012.66/x
  3. Step 3: Cross multiply
    1,318,623.65x = 1,978,012.11 × 509,012.66
  4. Step 4: Simplify right side
    1,318,623.65x = 1,006,833,205,623.31
  5. Step 5: Solve for x
    x = 1,006,833,205,623.31/1,318,623.65
  6. Step 6: Final answer
    x = 763,548.57

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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.