Home / 691,975.80-1,037,963.70-659,316.60

Finding the Fourth Proportional to 691,975.80, 1,037,963.70 and 659,316.60

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Solution

The fourth proportional to 691,975.80, 1,037,963.70 and 659,316.60 is: 988,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,975.80 : 1,037,963.70 = 659,316.60 : x
  2. Step 2: Convert to fraction form
    691,975.80/1,037,963.70 = 659,316.60/x
  3. Step 3: Cross multiply
    691,975.80x = 1,037,963.70 × 659,316.60
  4. Step 4: Simplify right side
    691,975.80x = 684,346,697,607.42
  5. Step 5: Solve for x
    x = 684,346,697,607.42/691,975.80
  6. Step 6: Final answer
    x = 988,974.90

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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.