Home / 839,059.20-1,258,588.80-389,630.70

Finding the Fourth Proportional to 839,059.20, 1,258,588.80 and 389,630.70

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Solution

The fourth proportional to 839,059.20, 1,258,588.80 and 389,630.70 is: 584,446.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,059.20 : 1,258,588.80 = 389,630.70 : x
  2. Step 2: Convert to fraction form
    839,059.20/1,258,588.80 = 389,630.70/x
  3. Step 3: Cross multiply
    839,059.20x = 1,258,588.80 × 389,630.70
  4. Step 4: Simplify right side
    839,059.20x = 490,384,835,156.16
  5. Step 5: Solve for x
    x = 490,384,835,156.16/839,059.20
  6. Step 6: Final answer
    x = 584,446.05

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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.