Home / 628,711.98-867,366.27-386,921.58

Finding the Fourth Proportional to 628,711.98, 867,366.27 and 386,921.58

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Solution

The fourth proportional to 628,711.98, 867,366.27 and 386,921.58 is: 533,794.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,711.98 : 867,366.27 = 386,921.58 : x
  2. Step 2: Convert to fraction form
    628,711.98/867,366.27 = 386,921.58/x
  3. Step 3: Cross multiply
    628,711.98x = 867,366.27 × 386,921.58
  4. Step 4: Simplify right side
    628,711.98x = 335,602,727,627.11
  5. Step 5: Solve for x
    x = 335,602,727,627.11/628,711.98
  6. Step 6: Final answer
    x = 533,794.07

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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.