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Finding the Fourth Proportional to 660,491.32, 990,424.64 and 255,873.04

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Solution

The fourth proportional to 660,491.32, 990,424.64 and 255,873.04 is: 383,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,491.32 : 990,424.64 = 255,873.04 : x
  2. Step 2: Convert to fraction form
    660,491.32/990,424.64 = 255,873.04/x
  3. Step 3: Cross multiply
    660,491.32x = 990,424.64 × 255,873.04
  4. Step 4: Simplify right side
    660,491.32x = 253,422,963,527.71
  5. Step 5: Solve for x
    x = 253,422,963,527.71/660,491.32
  6. Step 6: Final answer
    x = 383,688.56

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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.