Home / 695,983.78-960,525.03-390,112.12

Finding the Fourth Proportional to 695,983.78, 960,525.03 and 390,112.12

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Solution

The fourth proportional to 695,983.78, 960,525.03 and 390,112.12 is: 538,392.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,983.78 : 960,525.03 = 390,112.12 : x
  2. Step 2: Convert to fraction form
    695,983.78/960,525.03 = 390,112.12/x
  3. Step 3: Cross multiply
    695,983.78x = 960,525.03 × 390,112.12
  4. Step 4: Simplify right side
    695,983.78x = 374,712,455,766.36
  5. Step 5: Solve for x
    x = 374,712,455,766.36/695,983.78
  6. Step 6: Final answer
    x = 538,392.51

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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.