Home / 865,336.45-1,298,005.68-225,639.63

Finding the Fourth Proportional to 865,336.45, 1,298,005.68 and 225,639.63

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Solution

The fourth proportional to 865,336.45, 1,298,005.68 and 225,639.63 is: 338,459.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,336.45 : 1,298,005.68 = 225,639.63 : x
  2. Step 2: Convert to fraction form
    865,336.45/1,298,005.68 = 225,639.63/x
  3. Step 3: Cross multiply
    865,336.45x = 1,298,005.68 × 225,639.63
  4. Step 4: Simplify right side
    865,336.45x = 292,881,521,373.10
  5. Step 5: Solve for x
    x = 292,881,521,373.10/865,336.45
  6. Step 6: Final answer
    x = 338,459.71

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Double scale
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Similar ratio
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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.