Home / 812,340.54-1,121,041.76-467,986.46

Finding the Fourth Proportional to 812,340.54, 1,121,041.76 and 467,986.46

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Solution

The fourth proportional to 812,340.54, 1,121,041.76 and 467,986.46 is: 645,828.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,340.54 : 1,121,041.76 = 467,986.46 : x
  2. Step 2: Convert to fraction form
    812,340.54/1,121,041.76 = 467,986.46/x
  3. Step 3: Cross multiply
    812,340.54x = 1,121,041.76 × 467,986.46
  4. Step 4: Simplify right side
    812,340.54x = 524,632,356,829.43
  5. Step 5: Solve for x
    x = 524,632,356,829.43/812,340.54
  6. Step 6: Final answer
    x = 645,828.11

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1.5x scale

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.