Home / 990,532.26-1,485,725.70-316,432.53

Finding the Fourth Proportional to 990,532.26, 1,485,725.70 and 316,432.53

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Solution

The fourth proportional to 990,532.26, 1,485,725.70 and 316,432.53 is: 474,625.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,532.26 : 1,485,725.70 = 316,432.53 : x
  2. Step 2: Convert to fraction form
    990,532.26/1,485,725.70 = 316,432.53/x
  3. Step 3: Cross multiply
    990,532.26x = 1,485,725.70 × 316,432.53
  4. Step 4: Simplify right side
    990,532.26x = 470,131,942,137.02
  5. Step 5: Solve for x
    x = 470,131,942,137.02/990,532.26
  6. Step 6: Final answer
    x = 474,625.57

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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.