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Finding the Fourth Proportional to 777,427.80, 1,072,483.74 and 454,940.04

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Solution

The fourth proportional to 777,427.80, 1,072,483.74 and 454,940.04 is: 627,602.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,427.80 : 1,072,483.74 = 454,940.04 : x
  2. Step 2: Convert to fraction form
    777,427.80/1,072,483.74 = 454,940.04/x
  3. Step 3: Cross multiply
    777,427.80x = 1,072,483.74 × 454,940.04
  4. Step 4: Simplify right side
    777,427.80x = 487,915,795,574.95
  5. Step 5: Solve for x
    x = 487,915,795,574.95/777,427.80
  6. Step 6: Final answer
    x = 627,602.71

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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.