Home / 511,983.48-767,986.28-156,989.64

Finding the Fourth Proportional to 511,983.48, 767,986.28 and 156,989.64

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Solution

The fourth proportional to 511,983.48, 767,986.28 and 156,989.64 is: 235,487.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,983.48 : 767,986.28 = 156,989.64 : x
  2. Step 2: Convert to fraction form
    511,983.48/767,986.28 = 156,989.64/x
  3. Step 3: Cross multiply
    511,983.48x = 767,986.28 × 156,989.64
  4. Step 4: Simplify right side
    511,983.48x = 120,565,889,622.14
  5. Step 5: Solve for x
    x = 120,565,889,622.14/511,983.48
  6. Step 6: Final answer
    x = 235,487.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.