Home / 500,100.40-690,146.76-282,320.56

Finding the Fourth Proportional to 500,100.40, 690,146.76 and 282,320.56

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Solution

The fourth proportional to 500,100.40, 690,146.76 and 282,320.56 is: 389,607.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,100.40 : 690,146.76 = 282,320.56 : x
  2. Step 2: Convert to fraction form
    500,100.40/690,146.76 = 282,320.56/x
  3. Step 3: Cross multiply
    500,100.40x = 690,146.76 × 282,320.56
  4. Step 4: Simplify right side
    500,100.40x = 194,842,619,765.39
  5. Step 5: Solve for x
    x = 194,842,619,765.39/500,100.40
  6. Step 6: Final answer
    x = 389,607.01

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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.