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Finding the Fourth Proportional to 648,426.72, 894,671.28 and 380,102.88

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Solution

The fourth proportional to 648,426.72, 894,671.28 and 380,102.88 is: 524,449.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,426.72 : 894,671.28 = 380,102.88 : x
  2. Step 2: Convert to fraction form
    648,426.72/894,671.28 = 380,102.88/x
  3. Step 3: Cross multiply
    648,426.72x = 894,671.28 × 380,102.88
  4. Step 4: Simplify right side
    648,426.72x = 340,067,130,181.29
  5. Step 5: Solve for x
    x = 340,067,130,181.29/648,426.72
  6. Step 6: Final answer
    x = 524,449.59

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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.