Home / 511,981.47-767,983.28-156,987.63

Finding the Fourth Proportional to 511,981.47, 767,983.28 and 156,987.63

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Solution

The fourth proportional to 511,981.47, 767,983.28 and 156,987.63 is: 235,484.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,981.47 : 767,983.28 = 156,987.63 : x
  2. Step 2: Convert to fraction form
    511,981.47/767,983.28 = 156,987.63/x
  3. Step 3: Cross multiply
    511,981.47x = 767,983.28 × 156,987.63
  4. Step 4: Simplify right side
    511,981.47x = 120,563,874,221.89
  5. Step 5: Solve for x
    x = 120,563,874,221.89/511,981.47
  6. Step 6: Final answer
    x = 235,484.84

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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.