Home / 839,220.39-1,258,829.44-389,695.45

Finding the Fourth Proportional to 839,220.39, 1,258,829.44 and 389,695.45

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Solution

The fourth proportional to 839,220.39, 1,258,829.44 and 389,695.45 is: 584,542.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,220.39 : 1,258,829.44 = 389,695.45 : x
  2. Step 2: Convert to fraction form
    839,220.39/1,258,829.44 = 389,695.45/x
  3. Step 3: Cross multiply
    839,220.39x = 1,258,829.44 × 389,695.45
  4. Step 4: Simplify right side
    839,220.39x = 490,560,105,094.05
  5. Step 5: Solve for x
    x = 490,560,105,094.05/839,220.39
  6. Step 6: Final answer
    x = 584,542.64

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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.