Home / 407,721.90-611,582.85-403,785.30

Finding the Fourth Proportional to 407,721.90, 611,582.85 and 403,785.30

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Solution

The fourth proportional to 407,721.90, 611,582.85 and 403,785.30 is: 605,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,721.90 : 611,582.85 = 403,785.30 : x
  2. Step 2: Convert to fraction form
    407,721.90/611,582.85 = 403,785.30/x
  3. Step 3: Cross multiply
    407,721.90x = 611,582.85 × 403,785.30
  4. Step 4: Simplify right side
    407,721.90x = 246,948,164,562.11
  5. Step 5: Solve for x
    x = 246,948,164,562.11/407,721.90
  6. Step 6: Final answer
    x = 605,677.95

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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.