Home / 387,320.20-579,425.10-335,307.40

Finding the Fourth Proportional to 387,320.20, 579,425.10 and 335,307.40

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Solution

The fourth proportional to 387,320.20, 579,425.10 and 335,307.40 is: 501,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,320.20 : 579,425.10 = 335,307.40 : x
  2. Step 2: Convert to fraction form
    387,320.20/579,425.10 = 335,307.40/x
  3. Step 3: Cross multiply
    387,320.20x = 579,425.10 × 335,307.40
  4. Step 4: Simplify right side
    387,320.20x = 194,285,523,775.74
  5. Step 5: Solve for x
    x = 194,285,523,775.74/387,320.20
  6. Step 6: Final answer
    x = 501,614.75

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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.