Home / 928,891.14-1,281,745.71-515,421.06

Finding the Fourth Proportional to 928,891.14, 1,281,745.71 and 515,421.06

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Solution

The fourth proportional to 928,891.14, 1,281,745.71 and 515,421.06 is: 711,212.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,891.14 : 1,281,745.71 = 515,421.06 : x
  2. Step 2: Convert to fraction form
    928,891.14/1,281,745.71 = 515,421.06/x
  3. Step 3: Cross multiply
    928,891.14x = 1,281,745.71 × 515,421.06
  4. Step 4: Simplify right side
    928,891.14x = 660,638,732,498.65
  5. Step 5: Solve for x
    x = 660,638,732,498.65/928,891.14
  6. Step 6: Final answer
    x = 711,212.22

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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.