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Finding the Fourth Proportional to 839,894.40, 1,260,003.60 and 360,115.20

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Solution

The fourth proportional to 839,894.40, 1,260,003.60 and 360,115.20 is: 540,242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,894.40 : 1,260,003.60 = 360,115.20 : x
  2. Step 2: Convert to fraction form
    839,894.40/1,260,003.60 = 360,115.20/x
  3. Step 3: Cross multiply
    839,894.40x = 1,260,003.60 × 360,115.20
  4. Step 4: Simplify right side
    839,894.40x = 453,746,448,414.72
  5. Step 5: Solve for x
    x = 453,746,448,414.72/839,894.40
  6. Step 6: Final answer
    x = 540,242.26

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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.