Home / 1,258,545.20-1,887,731.40-405,604.40

Finding the Fourth Proportional to 1,258,545.20, 1,887,731.40 and 405,604.40

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Solution

The fourth proportional to 1,258,545.20, 1,887,731.40 and 405,604.40 is: 608,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,545.20 : 1,887,731.40 = 405,604.40 : x
  2. Step 2: Convert to fraction form
    1,258,545.20/1,887,731.40 = 405,604.40/x
  3. Step 3: Cross multiply
    1,258,545.20x = 1,887,731.40 × 405,604.40
  4. Step 4: Simplify right side
    1,258,545.20x = 765,672,161,858.16
  5. Step 5: Solve for x
    x = 765,672,161,858.16/1,258,545.20
  6. Step 6: Final answer
    x = 608,378.75

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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.