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Finding the Fourth Proportional to 881,226.28, 1,216,090.02 and 478,818.28

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Solution

The fourth proportional to 881,226.28, 1,216,090.02 and 478,818.28 is: 660,768.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,226.28 : 1,216,090.02 = 478,818.28 : x
  2. Step 2: Convert to fraction form
    881,226.28/1,216,090.02 = 478,818.28/x
  3. Step 3: Cross multiply
    881,226.28x = 1,216,090.02 × 478,818.28
  4. Step 4: Simplify right side
    881,226.28x = 582,286,131,701.57
  5. Step 5: Solve for x
    x = 582,286,131,701.57/881,226.28
  6. Step 6: Final answer
    x = 660,768.01

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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.