Home / 1,257,821.20-1,886,645.40-404,880.40

Finding the Fourth Proportional to 1,257,821.20, 1,886,645.40 and 404,880.40

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Solution

The fourth proportional to 1,257,821.20, 1,886,645.40 and 404,880.40 is: 607,292.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,821.20 : 1,886,645.40 = 404,880.40 : x
  2. Step 2: Convert to fraction form
    1,257,821.20/1,886,645.40 = 404,880.40/x
  3. Step 3: Cross multiply
    1,257,821.20x = 1,886,645.40 × 404,880.40
  4. Step 4: Simplify right side
    1,257,821.20x = 763,865,744,210.16
  5. Step 5: Solve for x
    x = 763,865,744,210.16/1,257,821.20
  6. Step 6: Final answer
    x = 607,292.79

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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.