Home / 386,535.40-579,803.10-331,239.40

Finding the Fourth Proportional to 386,535.40, 579,803.10 and 331,239.40

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Solution

The fourth proportional to 386,535.40, 579,803.10 and 331,239.40 is: 496,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,535.40 : 579,803.10 = 331,239.40 : x
  2. Step 2: Convert to fraction form
    386,535.40/579,803.10 = 331,239.40/x
  3. Step 3: Cross multiply
    386,535.40x = 579,803.10 × 331,239.40
  4. Step 4: Simplify right side
    386,535.40x = 192,053,630,962.14
  5. Step 5: Solve for x
    x = 192,053,630,962.14/386,535.40
  6. Step 6: Final answer
    x = 496,859.10

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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.