Home / 643,258.45-887,554.02-371,309.05

Finding the Fourth Proportional to 643,258.45, 887,554.02 and 371,309.05

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Solution

The fourth proportional to 643,258.45, 887,554.02 and 371,309.05 is: 512,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,258.45 : 887,554.02 = 371,309.05 : x
  2. Step 2: Convert to fraction form
    643,258.45/887,554.02 = 371,309.05/x
  3. Step 3: Cross multiply
    643,258.45x = 887,554.02 × 371,309.05
  4. Step 4: Simplify right side
    643,258.45x = 329,556,839,989.88
  5. Step 5: Solve for x
    x = 329,556,839,989.88/643,258.45
  6. Step 6: Final answer
    x = 512,324.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.