Home / 639,439.47-882,426.56-352,959.62

Finding the Fourth Proportional to 639,439.47, 882,426.56 and 352,959.62

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Solution

The fourth proportional to 639,439.47, 882,426.56 and 352,959.62 is: 487,084.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,439.47 : 882,426.56 = 352,959.62 : x
  2. Step 2: Convert to fraction form
    639,439.47/882,426.56 = 352,959.62/x
  3. Step 3: Cross multiply
    639,439.47x = 882,426.56 × 352,959.62
  4. Step 4: Simplify right side
    639,439.47x = 311,460,937,118.58
  5. Step 5: Solve for x
    x = 311,460,937,118.58/639,439.47
  6. Step 6: Final answer
    x = 487,084.32

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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.