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Finding the Fourth Proportional to 709,293.55, 978,824.76 and 454,644.55

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Solution

The fourth proportional to 709,293.55, 978,824.76 and 454,644.55 is: 627,409.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,293.55 : 978,824.76 = 454,644.55 : x
  2. Step 2: Convert to fraction form
    709,293.55/978,824.76 = 454,644.55/x
  3. Step 3: Cross multiply
    709,293.55x = 978,824.76 × 454,644.55
  4. Step 4: Simplify right side
    709,293.55x = 445,017,342,539.06
  5. Step 5: Solve for x
    x = 445,017,342,539.06/709,293.55
  6. Step 6: Final answer
    x = 627,409.26

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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.