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Finding the Fourth Proportional to 659,640.25, 910,376.45 and 373,157.83

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Solution

The fourth proportional to 659,640.25, 910,376.45 and 373,157.83 is: 514,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,640.25 : 910,376.45 = 373,157.83 : x
  2. Step 2: Convert to fraction form
    659,640.25/910,376.45 = 373,157.83/x
  3. Step 3: Cross multiply
    659,640.25x = 910,376.45 × 373,157.83
  4. Step 4: Simplify right side
    659,640.25x = 339,714,100,565.10
  5. Step 5: Solve for x
    x = 339,714,100,565.10/659,640.25
  6. Step 6: Final answer
    x = 514,999.05

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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.