Home / 928,871.64-1,281,718.80-515,401.56

Finding the Fourth Proportional to 928,871.64, 1,281,718.80 and 515,401.56

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Solution

The fourth proportional to 928,871.64, 1,281,718.80 and 515,401.56 is: 711,185.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,871.64 : 1,281,718.80 = 515,401.56 : x
  2. Step 2: Convert to fraction form
    928,871.64/1,281,718.80 = 515,401.56/x
  3. Step 3: Cross multiply
    928,871.64x = 1,281,718.80 × 515,401.56
  4. Step 4: Simplify right side
    928,871.64x = 660,599,869,001.33
  5. Step 5: Solve for x
    x = 660,599,869,001.33/928,871.64
  6. Step 6: Final answer
    x = 711,185.31

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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.