Home / 821,136.24-1,231,570.32-288,532.86

Finding the Fourth Proportional to 821,136.24, 1,231,570.32 and 288,532.86

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Solution

The fourth proportional to 821,136.24, 1,231,570.32 and 288,532.86 is: 432,752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,136.24 : 1,231,570.32 = 288,532.86 : x
  2. Step 2: Convert to fraction form
    821,136.24/1,231,570.32 = 288,532.86/x
  3. Step 3: Cross multiply
    821,136.24x = 1,231,570.32 × 288,532.86
  4. Step 4: Simplify right side
    821,136.24x = 355,348,506,720.72
  5. Step 5: Solve for x
    x = 355,348,506,720.72/821,136.24
  6. Step 6: Final answer
    x = 432,752.19

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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.