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Finding the Fourth Proportional to 518,968.20, 776,724.30 and 376,408.20

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Solution

The fourth proportional to 518,968.20, 776,724.30 and 376,408.20 is: 563,358.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,968.20 : 776,724.30 = 376,408.20 : x
  2. Step 2: Convert to fraction form
    518,968.20/776,724.30 = 376,408.20/x
  3. Step 3: Cross multiply
    518,968.20x = 776,724.30 × 376,408.20
  4. Step 4: Simplify right side
    518,968.20x = 292,365,395,659.26
  5. Step 5: Solve for x
    x = 292,365,395,659.26/518,968.20
  6. Step 6: Final answer
    x = 563,358.98

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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.