Home / 1,231,545.36-1,847,369.88-390,078.48

Finding the Fourth Proportional to 1,231,545.36, 1,847,369.88 and 390,078.48

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Solution

The fourth proportional to 1,231,545.36, 1,847,369.88 and 390,078.48 is: 585,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,545.36 : 1,847,369.88 = 390,078.48 : x
  2. Step 2: Convert to fraction form
    1,231,545.36/1,847,369.88 = 390,078.48/x
  3. Step 3: Cross multiply
    1,231,545.36x = 1,847,369.88 × 390,078.48
  4. Step 4: Simplify right side
    1,231,545.36x = 720,619,234,788.18
  5. Step 5: Solve for x
    x = 720,619,234,788.18/1,231,545.36
  6. Step 6: Final answer
    x = 585,134.14

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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.