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Finding the Fourth Proportional to 750,000.80, 1,034,993.86 and 405,829.22

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Solution

The fourth proportional to 750,000.80, 1,034,993.86 and 405,829.22 is: 560,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,000.80 : 1,034,993.86 = 405,829.22 : x
  2. Step 2: Convert to fraction form
    750,000.80/1,034,993.86 = 405,829.22/x
  3. Step 3: Cross multiply
    750,000.80x = 1,034,993.86 × 405,829.22
  4. Step 4: Simplify right side
    750,000.80x = 420,030,750,908.59
  5. Step 5: Solve for x
    x = 420,030,750,908.59/750,000.80
  6. Step 6: Final answer
    x = 560,040.40

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1.5x scale

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.