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Finding the Fourth Proportional to 586,004.80, 879,007.20 and 211,940.32

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Solution

The fourth proportional to 586,004.80, 879,007.20 and 211,940.32 is: 317,910.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,004.80 : 879,007.20 = 211,940.32 : x
  2. Step 2: Convert to fraction form
    586,004.80/879,007.20 = 211,940.32/x
  3. Step 3: Cross multiply
    586,004.80x = 879,007.20 × 211,940.32
  4. Step 4: Simplify right side
    586,004.80x = 186,297,067,250.30
  5. Step 5: Solve for x
    x = 186,297,067,250.30/586,004.80
  6. Step 6: Final answer
    x = 317,910.48

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Similar ratio
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1.5x scale

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.