Home / 487,761.85-672,816.67-322,190.83

Finding the Fourth Proportional to 487,761.85, 672,816.67 and 322,190.83

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Solution

The fourth proportional to 487,761.85, 672,816.67 and 322,190.83 is: 444,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,761.85 : 672,816.67 = 322,190.83 : x
  2. Step 2: Convert to fraction form
    487,761.85/672,816.67 = 322,190.83/x
  3. Step 3: Cross multiply
    487,761.85x = 672,816.67 × 322,190.83
  4. Step 4: Simplify right side
    487,761.85x = 216,775,361,345.14
  5. Step 5: Solve for x
    x = 216,775,361,345.14/487,761.85
  6. Step 6: Final answer
    x = 444,428.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.