Home / 439,932.30-659,898.45-390,068.70

Finding the Fourth Proportional to 439,932.30, 659,898.45 and 390,068.70

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Solution

The fourth proportional to 439,932.30, 659,898.45 and 390,068.70 is: 585,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,932.30 : 659,898.45 = 390,068.70 : x
  2. Step 2: Convert to fraction form
    439,932.30/659,898.45 = 390,068.70/x
  3. Step 3: Cross multiply
    439,932.30x = 659,898.45 × 390,068.70
  4. Step 4: Simplify right side
    439,932.30x = 257,405,730,523.52
  5. Step 5: Solve for x
    x = 257,405,730,523.52/439,932.30
  6. Step 6: Final answer
    x = 585,103.05

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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.