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Finding the Fourth Proportional to 669,299.70, 922,853.21 and 499,238.58

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Solution

The fourth proportional to 669,299.70, 922,853.21 and 499,238.58 is: 688,367.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,299.70 : 922,853.21 = 499,238.58 : x
  2. Step 2: Convert to fraction form
    669,299.70/922,853.21 = 499,238.58/x
  3. Step 3: Cross multiply
    669,299.70x = 922,853.21 × 499,238.58
  4. Step 4: Simplify right side
    669,299.70x = 460,723,923,612.65
  5. Step 5: Solve for x
    x = 460,723,923,612.65/669,299.70
  6. Step 6: Final answer
    x = 688,367.14

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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.