Home / 928,965.90-1,281,983.72-515,511.33

Finding the Fourth Proportional to 928,965.90, 1,281,983.72 and 515,511.33

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Solution

The fourth proportional to 928,965.90, 1,281,983.72 and 515,511.33 is: 711,411.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,965.90 : 1,281,983.72 = 515,511.33 : x
  2. Step 2: Convert to fraction form
    928,965.90/1,281,983.72 = 515,511.33/x
  3. Step 3: Cross multiply
    928,965.90x = 1,281,983.72 × 515,511.33
  4. Step 4: Simplify right side
    928,965.90x = 660,877,132,535.55
  5. Step 5: Solve for x
    x = 660,877,132,535.55/928,965.90
  6. Step 6: Final answer
    x = 711,411.62

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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.