Home / 678,539.28-1,016,258.68-323,802.40

Finding the Fourth Proportional to 678,539.28, 1,016,258.68 and 323,802.40

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Solution

The fourth proportional to 678,539.28, 1,016,258.68 and 323,802.40 is: 484,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,539.28 : 1,016,258.68 = 323,802.40 : x
  2. Step 2: Convert to fraction form
    678,539.28/1,016,258.68 = 323,802.40/x
  3. Step 3: Cross multiply
    678,539.28x = 1,016,258.68 × 323,802.40
  4. Step 4: Simplify right side
    678,539.28x = 329,066,999,604.83
  5. Step 5: Solve for x
    x = 329,066,999,604.83/678,539.28
  6. Step 6: Final answer
    x = 484,963.82

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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.