Home / 1,039,896.20-1,556,733.90-978,379.40

Finding the Fourth Proportional to 1,039,896.20, 1,556,733.90 and 978,379.40

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Solution

The fourth proportional to 1,039,896.20, 1,556,733.90 and 978,379.40 is: 1,464,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,896.20 : 1,556,733.90 = 978,379.40 : x
  2. Step 2: Convert to fraction form
    1,039,896.20/1,556,733.90 = 978,379.40/x
  3. Step 3: Cross multiply
    1,039,896.20x = 1,556,733.90 × 978,379.40
  4. Step 4: Simplify right side
    1,039,896.20x = 1,523,076,379,041.66
  5. Step 5: Solve for x
    x = 1,523,076,379,041.66/1,039,896.20
  6. Step 6: Final answer
    x = 1,464,642.70

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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.