Home / 485,844.90-729,095.40-272,612.40

Finding the Fourth Proportional to 485,844.90, 729,095.40 and 272,612.40

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Solution

The fourth proportional to 485,844.90, 729,095.40 and 272,612.40 is: 409,102.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,844.90 : 729,095.40 = 272,612.40 : x
  2. Step 2: Convert to fraction form
    485,844.90/729,095.40 = 272,612.40/x
  3. Step 3: Cross multiply
    485,844.90x = 729,095.40 × 272,612.40
  4. Step 4: Simplify right side
    485,844.90x = 198,760,446,822.96
  5. Step 5: Solve for x
    x = 198,760,446,822.96/485,844.90
  6. Step 6: Final answer
    x = 409,102.67

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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.