Home / 500,985.81-751,467.73-121,909.05

Finding the Fourth Proportional to 500,985.81, 751,467.73 and 121,909.05

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Solution

The fourth proportional to 500,985.81, 751,467.73 and 121,909.05 is: 182,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,985.81 : 751,467.73 = 121,909.05 : x
  2. Step 2: Convert to fraction form
    500,985.81/751,467.73 = 121,909.05/x
  3. Step 3: Cross multiply
    500,985.81x = 751,467.73 × 121,909.05
  4. Step 4: Simplify right side
    500,985.81x = 91,610,716,993.76
  5. Step 5: Solve for x
    x = 91,610,716,993.76/500,985.81
  6. Step 6: Final answer
    x = 182,860.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.