Home / 839,221.39-1,258,830.94-389,696.45

Finding the Fourth Proportional to 839,221.39, 1,258,830.94 and 389,696.45

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Solution

The fourth proportional to 839,221.39, 1,258,830.94 and 389,696.45 is: 584,544.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,221.39 : 1,258,830.94 = 389,696.45 : x
  2. Step 2: Convert to fraction form
    839,221.39/1,258,830.94 = 389,696.45/x
  3. Step 3: Cross multiply
    839,221.39x = 1,258,830.94 × 389,696.45
  4. Step 4: Simplify right side
    839,221.39x = 490,561,948,468.16
  5. Step 5: Solve for x
    x = 490,561,948,468.16/839,221.39
  6. Step 6: Final answer
    x = 584,544.14

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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.