Home / 857,957.13-1,286,944.88-258,923.66

Finding the Fourth Proportional to 857,957.13, 1,286,944.88 and 258,923.66

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Solution

The fourth proportional to 857,957.13, 1,286,944.88 and 258,923.66 is: 388,388.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,957.13 : 1,286,944.88 = 258,923.66 : x
  2. Step 2: Convert to fraction form
    857,957.13/1,286,944.88 = 258,923.66/x
  3. Step 3: Cross multiply
    857,957.13x = 1,286,944.88 × 258,923.66
  4. Step 4: Simplify right side
    857,957.13x = 333,220,470,818.52
  5. Step 5: Solve for x
    x = 333,220,470,818.52/857,957.13
  6. Step 6: Final answer
    x = 388,388.25

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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.