Home / 499,947.72-690,249.78-446,140.23

Finding the Fourth Proportional to 499,947.72, 690,249.78 and 446,140.23

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Solution

The fourth proportional to 499,947.72, 690,249.78 and 446,140.23 is: 615,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,947.72 : 690,249.78 = 446,140.23 : x
  2. Step 2: Convert to fraction form
    499,947.72/690,249.78 = 446,140.23/x
  3. Step 3: Cross multiply
    499,947.72x = 690,249.78 × 446,140.23
  4. Step 4: Simplify right side
    499,947.72x = 307,948,195,606.65
  5. Step 5: Solve for x
    x = 307,948,195,606.65/499,947.72
  6. Step 6: Final answer
    x = 615,960.80

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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.