Home / 1,221,740.16-1,832,160.96-422,816.64

Finding the Fourth Proportional to 1,221,740.16, 1,832,160.96 and 422,816.64

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Solution

The fourth proportional to 1,221,740.16, 1,832,160.96 and 422,816.64 is: 634,069.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,740.16 : 1,832,160.96 = 422,816.64 : x
  2. Step 2: Convert to fraction form
    1,221,740.16/1,832,160.96 = 422,816.64/x
  3. Step 3: Cross multiply
    1,221,740.16x = 1,832,160.96 × 422,816.64
  4. Step 4: Simplify right side
    1,221,740.16x = 774,668,141,046.37
  5. Step 5: Solve for x
    x = 774,668,141,046.37/1,221,740.16
  6. Step 6: Final answer
    x = 634,069.47

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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.