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Finding the Fourth Proportional to 553,593.90, 764,016.12 and 338,875.86

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Solution

The fourth proportional to 553,593.90, 764,016.12 and 338,875.86 is: 467,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,593.90 : 764,016.12 = 338,875.86 : x
  2. Step 2: Convert to fraction form
    553,593.90/764,016.12 = 338,875.86/x
  3. Step 3: Cross multiply
    553,593.90x = 764,016.12 × 338,875.86
  4. Step 4: Simplify right side
    553,593.90x = 258,906,619,718.86
  5. Step 5: Solve for x
    x = 258,906,619,718.86/553,593.90
  6. Step 6: Final answer
    x = 467,683.30

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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.