Home / 750,108.81-1,035,153.45-405,944.78

Finding the Fourth Proportional to 750,108.81, 1,035,153.45 and 405,944.78

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Solution

The fourth proportional to 750,108.81, 1,035,153.45 and 405,944.78 is: 560,205.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,108.81 : 1,035,153.45 = 405,944.78 : x
  2. Step 2: Convert to fraction form
    750,108.81/1,035,153.45 = 405,944.78/x
  3. Step 3: Cross multiply
    750,108.81x = 1,035,153.45 × 405,944.78
  4. Step 4: Simplify right side
    750,108.81x = 420,215,142,114.38
  5. Step 5: Solve for x
    x = 420,215,142,114.38/750,108.81
  6. Step 6: Final answer
    x = 560,205.58

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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.