Home / 857,301.81-1,286,001.32-258,345.69

Finding the Fourth Proportional to 857,301.81, 1,286,001.32 and 258,345.69

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Solution

The fourth proportional to 857,301.81, 1,286,001.32 and 258,345.69 is: 387,533.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,301.81 : 1,286,001.32 = 258,345.69 : x
  2. Step 2: Convert to fraction form
    857,301.81/1,286,001.32 = 258,345.69/x
  3. Step 3: Cross multiply
    857,301.81x = 1,286,001.32 × 258,345.69
  4. Step 4: Simplify right side
    857,301.81x = 332,232,898,356.31
  5. Step 5: Solve for x
    x = 332,232,898,356.31/857,301.81
  6. Step 6: Final answer
    x = 387,533.18

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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.