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Finding the Fourth Proportional to 553,869.27, 764,340.30 and 299,220.48

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Solution

The fourth proportional to 553,869.27, 764,340.30 and 299,220.48 is: 412,924.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,869.27 : 764,340.30 = 299,220.48 : x
  2. Step 2: Convert to fraction form
    553,869.27/764,340.30 = 299,220.48/x
  3. Step 3: Cross multiply
    553,869.27x = 764,340.30 × 299,220.48
  4. Step 4: Simplify right side
    553,869.27x = 228,706,271,449.34
  5. Step 5: Solve for x
    x = 228,706,271,449.34/553,869.27
  6. Step 6: Final answer
    x = 412,924.64

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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.