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Finding the Fourth Proportional to 690,779.32, 946,370.96 and 664,892.07

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Solution

The fourth proportional to 690,779.32, 946,370.96 and 664,892.07 is: 910,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,779.32 : 946,370.96 = 664,892.07 : x
  2. Step 2: Convert to fraction form
    690,779.32/946,370.96 = 664,892.07/x
  3. Step 3: Cross multiply
    690,779.32x = 946,370.96 × 664,892.07
  4. Step 4: Simplify right side
    690,779.32x = 629,234,543,257.83
  5. Step 5: Solve for x
    x = 629,234,543,257.83/690,779.32
  6. Step 6: Final answer
    x = 910,905.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.