Home / 511,982.47-767,984.78-156,988.63

Finding the Fourth Proportional to 511,982.47, 767,984.78 and 156,988.63

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Solution

The fourth proportional to 511,982.47, 767,984.78 and 156,988.63 is: 235,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,982.47 : 767,984.78 = 156,988.63 : x
  2. Step 2: Convert to fraction form
    511,982.47/767,984.78 = 156,988.63/x
  3. Step 3: Cross multiply
    511,982.47x = 767,984.78 × 156,988.63
  4. Step 4: Simplify right side
    511,982.47x = 120,564,878,473.05
  5. Step 5: Solve for x
    x = 120,564,878,473.05/511,982.47
  6. Step 6: Final answer
    x = 235,486.34

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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.