Home / 389,664.95-538,109.00-368,436.15

Finding the Fourth Proportional to 389,664.95, 538,109.00 and 368,436.15

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Solution

The fourth proportional to 389,664.95, 538,109.00 and 368,436.15 is: 508,793.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,664.95 : 538,109.00 = 368,436.15 : x
  2. Step 2: Convert to fraction form
    389,664.95/538,109.00 = 368,436.15/x
  3. Step 3: Cross multiply
    389,664.95x = 538,109.00 × 368,436.15
  4. Step 4: Simplify right side
    389,664.95x = 198,258,806,398.17
  5. Step 5: Solve for x
    x = 198,258,806,398.17/389,664.95
  6. Step 6: Final answer
    x = 508,793.03

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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.