Home / 858,460.72-1,286,816.28-385,018.96

Finding the Fourth Proportional to 858,460.72, 1,286,816.28 and 385,018.96

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Solution

The fourth proportional to 858,460.72, 1,286,816.28 and 385,018.96 is: 577,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,460.72 : 1,286,816.28 = 385,018.96 : x
  2. Step 2: Convert to fraction form
    858,460.72/1,286,816.28 = 385,018.96/x
  3. Step 3: Cross multiply
    858,460.72x = 1,286,816.28 × 385,018.96
  4. Step 4: Simplify right side
    858,460.72x = 495,448,665,836.67
  5. Step 5: Solve for x
    x = 495,448,665,836.67/858,460.72
  6. Step 6: Final answer
    x = 577,136.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.