Home / 857,164.65-1,286,456.39-430,822.68

Finding the Fourth Proportional to 857,164.65, 1,286,456.39 and 430,822.68

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Solution

The fourth proportional to 857,164.65, 1,286,456.39 and 430,822.68 is: 646,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,164.65 : 1,286,456.39 = 430,822.68 : x
  2. Step 2: Convert to fraction form
    857,164.65/1,286,456.39 = 430,822.68/x
  3. Step 3: Cross multiply
    857,164.65x = 1,286,456.39 × 430,822.68
  4. Step 4: Simplify right side
    857,164.65x = 554,234,589,642.93
  5. Step 5: Solve for x
    x = 554,234,589,642.93/857,164.65
  6. Step 6: Final answer
    x = 646,590.58

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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.