Home / 664,100.13-916,458.30-377,637.75

Finding the Fourth Proportional to 664,100.13, 916,458.30 and 377,637.75

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Solution

The fourth proportional to 664,100.13, 916,458.30 and 377,637.75 is: 521,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,100.13 : 916,458.30 = 377,637.75 : x
  2. Step 2: Convert to fraction form
    664,100.13/916,458.30 = 377,637.75/x
  3. Step 3: Cross multiply
    664,100.13x = 916,458.30 × 377,637.75
  4. Step 4: Simplify right side
    664,100.13x = 346,089,250,380.83
  5. Step 5: Solve for x
    x = 346,089,250,380.83/664,100.13
  6. Step 6: Final answer
    x = 521,140.16

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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.