Home / 778,274.72-1,166,860.78-345,754.63

Finding the Fourth Proportional to 778,274.72, 1,166,860.78 and 345,754.63

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Solution

The fourth proportional to 778,274.72, 1,166,860.78 and 345,754.63 is: 518,387.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,274.72 : 1,166,860.78 = 345,754.63 : x
  2. Step 2: Convert to fraction form
    778,274.72/1,166,860.78 = 345,754.63/x
  3. Step 3: Cross multiply
    778,274.72x = 1,166,860.78 × 345,754.63
  4. Step 4: Simplify right side
    778,274.72x = 403,447,517,250.41
  5. Step 5: Solve for x
    x = 403,447,517,250.41/778,274.72
  6. Step 6: Final answer
    x = 518,387.03

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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.