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Finding the Fourth Proportional to 660,324.32, 990,633.36 and 239,590.88

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Solution

The fourth proportional to 660,324.32, 990,633.36 and 239,590.88 is: 359,439.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,324.32 : 990,633.36 = 239,590.88 : x
  2. Step 2: Convert to fraction form
    660,324.32/990,633.36 = 239,590.88/x
  3. Step 3: Cross multiply
    660,324.32x = 990,633.36 × 239,590.88
  4. Step 4: Simplify right side
    660,324.32x = 237,346,718,479.76
  5. Step 5: Solve for x
    x = 237,346,718,479.76/660,324.32
  6. Step 6: Final answer
    x = 359,439.61

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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.