Home / 3,119,689.12-4,679,521.36-989,939.28

Finding the Fourth Proportional to 3,119,689.12, 4,679,521.36 and 989,939.28

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Solution

The fourth proportional to 3,119,689.12, 4,679,521.36 and 989,939.28 is: 1,484,905.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119,689.12 : 4,679,521.36 = 989,939.28 : x
  2. Step 2: Convert to fraction form
    3,119,689.12/4,679,521.36 = 989,939.28/x
  3. Step 3: Cross multiply
    3,119,689.12x = 4,679,521.36 × 989,939.28
  4. Step 4: Simplify right side
    3,119,689.12x = 4,632,442,005,863.02
  5. Step 5: Solve for x
    x = 4,632,442,005,863.02/3,119,689.12
  6. Step 6: Final answer
    x = 1,484,905.01

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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.