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Finding the Fourth Proportional to 484,420.80, 727,214.40 and 480,921.60

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Solution

The fourth proportional to 484,420.80, 727,214.40 and 480,921.60 is: 721,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,420.80 : 727,214.40 = 480,921.60 : x
  2. Step 2: Convert to fraction form
    484,420.80/727,214.40 = 480,921.60/x
  3. Step 3: Cross multiply
    484,420.80x = 727,214.40 × 480,921.60
  4. Step 4: Simplify right side
    484,420.80x = 349,733,112,791.04
  5. Step 5: Solve for x
    x = 349,733,112,791.04/484,420.80
  6. Step 6: Final answer
    x = 721,961.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.