Home / 749,419.80-1,121,796.90-432,936.60

Finding the Fourth Proportional to 749,419.80, 1,121,796.90 and 432,936.60

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Solution

The fourth proportional to 749,419.80, 1,121,796.90 and 432,936.60 is: 648,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,419.80 : 1,121,796.90 = 432,936.60 : x
  2. Step 2: Convert to fraction form
    749,419.80/1,121,796.90 = 432,936.60/x
  3. Step 3: Cross multiply
    749,419.80x = 1,121,796.90 × 432,936.60
  4. Step 4: Simplify right side
    749,419.80x = 485,666,935,776.54
  5. Step 5: Solve for x
    x = 485,666,935,776.54/749,419.80
  6. Step 6: Final answer
    x = 648,057.25

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1.5x scale

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.