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Finding the Fourth Proportional to 713,014.19, 983,959.59 and 390,736.97

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Solution

The fourth proportional to 713,014.19, 983,959.59 and 390,736.97 is: 539,217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,014.19 : 983,959.59 = 390,736.97 : x
  2. Step 2: Convert to fraction form
    713,014.19/983,959.59 = 390,736.97/x
  3. Step 3: Cross multiply
    713,014.19x = 983,959.59 × 390,736.97
  4. Step 4: Simplify right side
    713,014.19x = 384,469,388,799.04
  5. Step 5: Solve for x
    x = 384,469,388,799.04/713,014.19
  6. Step 6: Final answer
    x = 539,217.02

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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.