Home / 746,921.28-1,120,880.16-387,423.84

Finding the Fourth Proportional to 746,921.28, 1,120,880.16 and 387,423.84

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Solution

The fourth proportional to 746,921.28, 1,120,880.16 and 387,423.84 is: 581,394.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    746,921.28 : 1,120,880.16 = 387,423.84 : x
  2. Step 2: Convert to fraction form
    746,921.28/1,120,880.16 = 387,423.84/x
  3. Step 3: Cross multiply
    746,921.28x = 1,120,880.16 × 387,423.84
  4. Step 4: Simplify right side
    746,921.28x = 434,255,695,767.01
  5. Step 5: Solve for x
    x = 434,255,695,767.01/746,921.28
  6. Step 6: Final answer
    x = 581,394.19

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1.5x scale

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.