Home / 658,867.28-909,246.93-386,940.92

Finding the Fourth Proportional to 658,867.28, 909,246.93 and 386,940.92

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Solution

The fourth proportional to 658,867.28, 909,246.93 and 386,940.92 is: 533,984.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,867.28 : 909,246.93 = 386,940.92 : x
  2. Step 2: Convert to fraction form
    658,867.28/909,246.93 = 386,940.92/x
  3. Step 3: Cross multiply
    658,867.28x = 909,246.93 × 386,940.92
  4. Step 4: Simplify right side
    658,867.28x = 351,824,843,601.38
  5. Step 5: Solve for x
    x = 351,824,843,601.38/658,867.28
  6. Step 6: Final answer
    x = 533,984.39

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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.