Home / 781,200-1,078,171.04-494,746.72

Finding the Fourth Proportional to 781,200, 1,078,171.04 and 494,746.72

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Solution

The fourth proportional to 781,200, 1,078,171.04 and 494,746.72 is: 682,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,200 : 1,078,171.04 = 494,746.72 : x
  2. Step 2: Convert to fraction form
    781,200/1,078,171.04 = 494,746.72/x
  3. Step 3: Cross multiply
    781,200x = 1,078,171.04 × 494,746.72
  4. Step 4: Simplify right side
    781,200x = 533,421,585,638.99
  5. Step 5: Solve for x
    x = 533,421,585,638.99/781,200
  6. Step 6: Final answer
    x = 682,823.33

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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.