Home / 1,021,122.90-1,530,895.32-515,423.55

Finding the Fourth Proportional to 1,021,122.90, 1,530,895.32 and 515,423.55

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Solution

The fourth proportional to 1,021,122.90, 1,530,895.32 and 515,423.55 is: 772,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,122.90 : 1,530,895.32 = 515,423.55 : x
  2. Step 2: Convert to fraction form
    1,021,122.90/1,530,895.32 = 515,423.55/x
  3. Step 3: Cross multiply
    1,021,122.90x = 1,530,895.32 × 515,423.55
  4. Step 4: Simplify right side
    1,021,122.90x = 789,059,500,512.79
  5. Step 5: Solve for x
    x = 789,059,500,512.79/1,021,122.90
  6. Step 6: Final answer
    x = 772,737.05

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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.