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Finding the Fourth Proportional to 750,109.12, 1,035,153.88 and 405,945.10

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Solution

The fourth proportional to 750,109.12, 1,035,153.88 and 405,945.10 is: 560,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,109.12 : 1,035,153.88 = 405,945.10 : x
  2. Step 2: Convert to fraction form
    750,109.12/1,035,153.88 = 405,945.10/x
  3. Step 3: Cross multiply
    750,109.12x = 1,035,153.88 × 405,945.10
  4. Step 4: Simplify right side
    750,109.12x = 420,215,645,331.99
  5. Step 5: Solve for x
    x = 420,215,645,331.99/750,109.12
  6. Step 6: Final answer
    x = 560,206.02

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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.