Home / 1,258,549.20-1,887,737.40-405,608.40

Finding the Fourth Proportional to 1,258,549.20, 1,887,737.40 and 405,608.40

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Solution

The fourth proportional to 1,258,549.20, 1,887,737.40 and 405,608.40 is: 608,384.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,549.20 : 1,887,737.40 = 405,608.40 : x
  2. Step 2: Convert to fraction form
    1,258,549.20/1,887,737.40 = 405,608.40/x
  3. Step 3: Cross multiply
    1,258,549.20x = 1,887,737.40 × 405,608.40
  4. Step 4: Simplify right side
    1,258,549.20x = 765,682,146,434.16
  5. Step 5: Solve for x
    x = 765,682,146,434.16/1,258,549.20
  6. Step 6: Final answer
    x = 608,384.75

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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.