Home / 668,820.40-1,003,352.10-219,416.20

Finding the Fourth Proportional to 668,820.40, 1,003,352.10 and 219,416.20

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Solution

The fourth proportional to 668,820.40, 1,003,352.10 and 219,416.20 is: 329,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,820.40 : 1,003,352.10 = 219,416.20 : x
  2. Step 2: Convert to fraction form
    668,820.40/1,003,352.10 = 219,416.20/x
  3. Step 3: Cross multiply
    668,820.40x = 1,003,352.10 × 219,416.20
  4. Step 4: Simplify right side
    668,820.40x = 220,151,705,044.02
  5. Step 5: Solve for x
    x = 220,151,705,044.02/668,820.40
  6. Step 6: Final answer
    x = 329,164.16

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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.