Home / 787,388.29-1,086,311.66-515,611.17

Finding the Fourth Proportional to 787,388.29, 1,086,311.66 and 515,611.17

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Solution

The fourth proportional to 787,388.29, 1,086,311.66 and 515,611.17 is: 711,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,388.29 : 1,086,311.66 = 515,611.17 : x
  2. Step 2: Convert to fraction form
    787,388.29/1,086,311.66 = 515,611.17/x
  3. Step 3: Cross multiply
    787,388.29x = 1,086,311.66 × 515,611.17
  4. Step 4: Simplify right side
    787,388.29x = 560,114,423,419.19
  5. Step 5: Solve for x
    x = 560,114,423,419.19/787,388.29
  6. Step 6: Final answer
    x = 711,357.32

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Double scale
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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.