Home / 777,474.75-1,072,548.32-454,985.20

Finding the Fourth Proportional to 777,474.75, 1,072,548.32 and 454,985.20

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Solution

The fourth proportional to 777,474.75, 1,072,548.32 and 454,985.20 is: 627,664.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,474.75 : 1,072,548.32 = 454,985.20 : x
  2. Step 2: Convert to fraction form
    777,474.75/1,072,548.32 = 454,985.20/x
  3. Step 3: Cross multiply
    777,474.75x = 1,072,548.32 × 454,985.20
  4. Step 4: Simplify right side
    777,474.75x = 487,993,606,522.12
  5. Step 5: Solve for x
    x = 487,993,606,522.12/777,474.75
  6. Step 6: Final answer
    x = 627,664.89

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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.