Home / 911,966.20-1,368,018.10-272,219.44

Finding the Fourth Proportional to 911,966.20, 1,368,018.10 and 272,219.44

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Solution

The fourth proportional to 911,966.20, 1,368,018.10 and 272,219.44 is: 408,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,966.20 : 1,368,018.10 = 272,219.44 : x
  2. Step 2: Convert to fraction form
    911,966.20/1,368,018.10 = 272,219.44/x
  3. Step 3: Cross multiply
    911,966.20x = 1,368,018.10 × 272,219.44
  4. Step 4: Simplify right side
    911,966.20x = 372,401,121,091.86
  5. Step 5: Solve for x
    x = 372,401,121,091.86/911,966.20
  6. Step 6: Final answer
    x = 408,349.70

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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.