Home / 521,458.71-719,623.22-340,286.55

Finding the Fourth Proportional to 521,458.71, 719,623.22 and 340,286.55

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Solution

The fourth proportional to 521,458.71, 719,623.22 and 340,286.55 is: 469,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,458.71 : 719,623.22 = 340,286.55 : x
  2. Step 2: Convert to fraction form
    521,458.71/719,623.22 = 340,286.55/x
  3. Step 3: Cross multiply
    521,458.71x = 719,623.22 × 340,286.55
  4. Step 4: Simplify right side
    521,458.71x = 244,878,102,833.69
  5. Step 5: Solve for x
    x = 244,878,102,833.69/521,458.71
  6. Step 6: Final answer
    x = 469,602.10

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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.