Home / 865,876.37-1,298,936.47-266,885.81

Finding the Fourth Proportional to 865,876.37, 1,298,936.47 and 266,885.81

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Solution

The fourth proportional to 865,876.37, 1,298,936.47 and 266,885.81 is: 400,366.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,876.37 : 1,298,936.47 = 266,885.81 : x
  2. Step 2: Convert to fraction form
    865,876.37/1,298,936.47 = 266,885.81/x
  3. Step 3: Cross multiply
    865,876.37x = 1,298,936.47 × 266,885.81
  4. Step 4: Simplify right side
    865,876.37x = 346,667,711,934.49
  5. Step 5: Solve for x
    x = 346,667,711,934.49/865,876.37
  6. Step 6: Final answer
    x = 400,366.29

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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.