Home / 1,318,869.12-1,976,860.50-679,211.58

Finding the Fourth Proportional to 1,318,869.12, 1,976,860.50 and 679,211.58

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Solution

The fourth proportional to 1,318,869.12, 1,976,860.50 and 679,211.58 is: 1,018,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,869.12 : 1,976,860.50 = 679,211.58 : x
  2. Step 2: Convert to fraction form
    1,318,869.12/1,976,860.50 = 679,211.58/x
  3. Step 3: Cross multiply
    1,318,869.12x = 1,976,860.50 × 679,211.58
  4. Step 4: Simplify right side
    1,318,869.12x = 1,342,706,543,644.59
  5. Step 5: Solve for x
    x = 1,342,706,543,644.59/1,318,869.12
  6. Step 6: Final answer
    x = 1,018,074.14

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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.