Home / 857,826.40-1,287,200.40-359,240.80

Finding the Fourth Proportional to 857,826.40, 1,287,200.40 and 359,240.80

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Solution

The fourth proportional to 857,826.40, 1,287,200.40 and 359,240.80 is: 539,054.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,826.40 : 1,287,200.40 = 359,240.80 : x
  2. Step 2: Convert to fraction form
    857,826.40/1,287,200.40 = 359,240.80/x
  3. Step 3: Cross multiply
    857,826.40x = 1,287,200.40 × 359,240.80
  4. Step 4: Simplify right side
    857,826.40x = 462,414,901,456.32
  5. Step 5: Solve for x
    x = 462,414,901,456.32/857,826.40
  6. Step 6: Final answer
    x = 539,054.17

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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.