Home / 1,318,847.70-1,978,271.55-987,071.70

Finding the Fourth Proportional to 1,318,847.70, 1,978,271.55 and 987,071.70

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Solution

The fourth proportional to 1,318,847.70, 1,978,271.55 and 987,071.70 is: 1,480,607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,847.70 : 1,978,271.55 = 987,071.70 : x
  2. Step 2: Convert to fraction form
    1,318,847.70/1,978,271.55 = 987,071.70/x
  3. Step 3: Cross multiply
    1,318,847.70x = 1,978,271.55 × 987,071.70
  4. Step 4: Simplify right side
    1,318,847.70x = 1,952,695,861,920.14
  5. Step 5: Solve for x
    x = 1,952,695,861,920.14/1,318,847.70
  6. Step 6: Final answer
    x = 1,480,607.55

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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.