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Finding the Fourth Proportional to 519,615.40, 779,682.30 and 295,148.20

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Solution

The fourth proportional to 519,615.40, 779,682.30 and 295,148.20 is: 442,869.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,615.40 : 779,682.30 = 295,148.20 : x
  2. Step 2: Convert to fraction form
    519,615.40/779,682.30 = 295,148.20/x
  3. Step 3: Cross multiply
    519,615.40x = 779,682.30 × 295,148.20
  4. Step 4: Simplify right side
    519,615.40x = 230,121,827,416.86
  5. Step 5: Solve for x
    x = 230,121,827,416.86/519,615.40
  6. Step 6: Final answer
    x = 442,869.53

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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.