Home / 865,336.09-1,298,005.11-225,639.28

Finding the Fourth Proportional to 865,336.09, 1,298,005.11 and 225,639.28

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Solution

The fourth proportional to 865,336.09, 1,298,005.11 and 225,639.28 is: 338,459.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,336.09 : 1,298,005.11 = 225,639.28 : x
  2. Step 2: Convert to fraction form
    865,336.09/1,298,005.11 = 225,639.28/x
  3. Step 3: Cross multiply
    865,336.09x = 1,298,005.11 × 225,639.28
  4. Step 4: Simplify right side
    865,336.09x = 292,880,938,456.72
  5. Step 5: Solve for x
    x = 292,880,938,456.72/865,336.09
  6. Step 6: Final answer
    x = 338,459.17

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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.