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Finding the Fourth Proportional to 561,101.40, 842,429.70 and 442,906.20

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Solution

The fourth proportional to 561,101.40, 842,429.70 and 442,906.20 is: 664,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,101.40 : 842,429.70 = 442,906.20 : x
  2. Step 2: Convert to fraction form
    561,101.40/842,429.70 = 442,906.20/x
  3. Step 3: Cross multiply
    561,101.40x = 842,429.70 × 442,906.20
  4. Step 4: Simplify right side
    561,101.40x = 373,117,337,194.14
  5. Step 5: Solve for x
    x = 373,117,337,194.14/561,101.40
  6. Step 6: Final answer
    x = 664,973.10

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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.