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Finding the Fourth Proportional to 561,645.60, 842,468.40 and 495,215.48

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Solution

The fourth proportional to 561,645.60, 842,468.40 and 495,215.48 is: 742,823.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,645.60 : 842,468.40 = 495,215.48 : x
  2. Step 2: Convert to fraction form
    561,645.60/842,468.40 = 495,215.48/x
  3. Step 3: Cross multiply
    561,645.60x = 842,468.40 × 495,215.48
  4. Step 4: Simplify right side
    561,645.60x = 417,203,388,878.49
  5. Step 5: Solve for x
    x = 417,203,388,878.49/561,645.60
  6. Step 6: Final answer
    x = 742,823.21

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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.