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Finding the Fourth Proportional to 987,684.22, 1,479,980.85 and 763,596.91

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Solution

The fourth proportional to 987,684.22, 1,479,980.85 and 763,596.91 is: 1,144,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,684.22 : 1,479,980.85 = 763,596.91 : x
  2. Step 2: Convert to fraction form
    987,684.22/1,479,980.85 = 763,596.91/x
  3. Step 3: Cross multiply
    987,684.22x = 1,479,980.85 × 763,596.91
  4. Step 4: Simplify right side
    987,684.22x = 1,130,108,803,919.17
  5. Step 5: Solve for x
    x = 1,130,108,803,919.17/987,684.22
  6. Step 6: Final answer
    x = 1,144,200.53

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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.