Home / 812,865.78-1,121,740.08-450,288.52

Finding the Fourth Proportional to 812,865.78, 1,121,740.08 and 450,288.52

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Solution

The fourth proportional to 812,865.78, 1,121,740.08 and 450,288.52 is: 621,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,865.78 : 1,121,740.08 = 450,288.52 : x
  2. Step 2: Convert to fraction form
    812,865.78/1,121,740.08 = 450,288.52/x
  3. Step 3: Cross multiply
    812,865.78x = 1,121,740.08 × 450,288.52
  4. Step 4: Simplify right side
    812,865.78x = 505,106,673,713.46
  5. Step 5: Solve for x
    x = 505,106,673,713.46/812,865.78
  6. Step 6: Final answer
    x = 621,390.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.