Home / 781,806.78-1,078,895.44-424,110.78

Finding the Fourth Proportional to 781,806.78, 1,078,895.44 and 424,110.78

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Solution

The fourth proportional to 781,806.78, 1,078,895.44 and 424,110.78 is: 585,274.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,806.78 : 1,078,895.44 = 424,110.78 : x
  2. Step 2: Convert to fraction form
    781,806.78/1,078,895.44 = 424,110.78/x
  3. Step 3: Cross multiply
    781,806.78x = 1,078,895.44 × 424,110.78
  4. Step 4: Simplify right side
    781,806.78x = 457,571,186,596.84
  5. Step 5: Solve for x
    x = 457,571,186,596.84/781,806.78
  6. Step 6: Final answer
    x = 585,274.01

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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.