Home / 500,240.16-690,397.12-285,330.88

Finding the Fourth Proportional to 500,240.16, 690,397.12 and 285,330.88

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Solution

The fourth proportional to 500,240.16, 690,397.12 and 285,330.88 is: 393,794.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,240.16 : 690,397.12 = 285,330.88 : x
  2. Step 2: Convert to fraction form
    500,240.16/690,397.12 = 285,330.88/x
  3. Step 3: Cross multiply
    500,240.16x = 690,397.12 × 285,330.88
  4. Step 4: Simplify right side
    500,240.16x = 196,991,617,799.07
  5. Step 5: Solve for x
    x = 196,991,617,799.07/500,240.16
  6. Step 6: Final answer
    x = 393,794.09

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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.