Home / 8,375,990.40-12,563,985.60-2,990,721.60

Finding the Fourth Proportional to 8,375,990.40, 12,563,985.60 and 2,990,721.60

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Solution

The fourth proportional to 8,375,990.40, 12,563,985.60 and 2,990,721.60 is: 4,486,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375,990.40 : 12,563,985.60 = 2,990,721.60 : x
  2. Step 2: Convert to fraction form
    8,375,990.40/12,563,985.60 = 2,990,721.60/x
  3. Step 3: Cross multiply
    8,375,990.40x = 12,563,985.60 × 2,990,721.60
  4. Step 4: Simplify right side
    8,375,990.40x = 37,575,383,116,008.96
  5. Step 5: Solve for x
    x = 37,575,383,116,008.96/8,375,990.40
  6. Step 6: Final answer
    x = 4,486,082.40

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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.