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Finding the Fourth Proportional to 709,578.31, 979,068.45 and 451,361.38

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Solution

The fourth proportional to 709,578.31, 979,068.45 and 451,361.38 is: 622,783.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,578.31 : 979,068.45 = 451,361.38 : x
  2. Step 2: Convert to fraction form
    709,578.31/979,068.45 = 451,361.38/x
  3. Step 3: Cross multiply
    709,578.31x = 979,068.45 × 451,361.38
  4. Step 4: Simplify right side
    709,578.31x = 441,913,686,706.46
  5. Step 5: Solve for x
    x = 441,913,686,706.46/709,578.31
  6. Step 6: Final answer
    x = 622,783.53

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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.