Home / 627,519.84-865,681.58-455,059.46

Finding the Fourth Proportional to 627,519.84, 865,681.58 and 455,059.46

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Solution

The fourth proportional to 627,519.84, 865,681.58 and 455,059.46 is: 627,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,519.84 : 865,681.58 = 455,059.46 : x
  2. Step 2: Convert to fraction form
    627,519.84/865,681.58 = 455,059.46/x
  3. Step 3: Cross multiply
    627,519.84x = 865,681.58 × 455,059.46
  4. Step 4: Simplify right side
    627,519.84x = 393,936,585,723.04
  5. Step 5: Solve for x
    x = 393,936,585,723.04/627,519.84
  6. Step 6: Final answer
    x = 627,767.54

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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.