Home / 2,989,040.40-4,484,872.80-1,390,780.80

Finding the Fourth Proportional to 2,989,040.40, 4,484,872.80 and 1,390,780.80

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Solution

The fourth proportional to 2,989,040.40, 4,484,872.80 and 1,390,780.80 is: 2,086,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989,040.40 : 4,484,872.80 = 1,390,780.80 : x
  2. Step 2: Convert to fraction form
    2,989,040.40/4,484,872.80 = 1,390,780.80/x
  3. Step 3: Cross multiply
    2,989,040.40x = 4,484,872.80 × 1,390,780.80
  4. Step 4: Simplify right side
    2,989,040.40x = 6,237,474,980,682.24
  5. Step 5: Solve for x
    x = 6,237,474,980,682.24/2,989,040.40
  6. Step 6: Final answer
    x = 2,086,781.76

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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.