Home / 857,392.68-1,286,089.58-217,744.40

Finding the Fourth Proportional to 857,392.68, 1,286,089.58 and 217,744.40

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Solution

The fourth proportional to 857,392.68, 1,286,089.58 and 217,744.40 is: 326,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,392.68 : 1,286,089.58 = 217,744.40 : x
  2. Step 2: Convert to fraction form
    857,392.68/1,286,089.58 = 217,744.40/x
  3. Step 3: Cross multiply
    857,392.68x = 1,286,089.58 × 217,744.40
  4. Step 4: Simplify right side
    857,392.68x = 280,038,796,424.18
  5. Step 5: Solve for x
    x = 280,038,796,424.18/857,392.68
  6. Step 6: Final answer
    x = 326,616.73

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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.