Home / 638,127.27-880,621.56-351,657.63

Finding the Fourth Proportional to 638,127.27, 880,621.56 and 351,657.63

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Solution

The fourth proportional to 638,127.27, 880,621.56 and 351,657.63 is: 485,290.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,127.27 : 880,621.56 = 351,657.63 : x
  2. Step 2: Convert to fraction form
    638,127.27/880,621.56 = 351,657.63/x
  3. Step 3: Cross multiply
    638,127.27x = 880,621.56 × 351,657.63
  4. Step 4: Simplify right side
    638,127.27x = 309,677,290,716.50
  5. Step 5: Solve for x
    x = 309,677,290,716.50/638,127.27
  6. Step 6: Final answer
    x = 485,290.80

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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.