Home / 821,281.44-1,133,336.40-515,521.92

Finding the Fourth Proportional to 821,281.44, 1,133,336.40 and 515,521.92

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Solution

The fourth proportional to 821,281.44, 1,133,336.40 and 515,521.92 is: 711,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,281.44 : 1,133,336.40 = 515,521.92 : x
  2. Step 2: Convert to fraction form
    821,281.44/1,133,336.40 = 515,521.92/x
  3. Step 3: Cross multiply
    821,281.44x = 1,133,336.40 × 515,521.92
  4. Step 4: Simplify right side
    821,281.44x = 584,259,756,933.89
  5. Step 5: Solve for x
    x = 584,259,756,933.89/821,281.44
  6. Step 6: Final answer
    x = 711,400.17

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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.