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Finding the Fourth Proportional to 669,410.68, 923,006.28 and 499,349.56

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Solution

The fourth proportional to 669,410.68, 923,006.28 and 499,349.56 is: 688,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,410.68 : 923,006.28 = 499,349.56 : x
  2. Step 2: Convert to fraction form
    669,410.68/923,006.28 = 499,349.56/x
  3. Step 3: Cross multiply
    669,410.68x = 923,006.28 × 499,349.56
  4. Step 4: Simplify right side
    669,410.68x = 460,902,779,795.24
  5. Step 5: Solve for x
    x = 460,902,779,795.24/669,410.68
  6. Step 6: Final answer
    x = 688,520.21

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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.