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Finding the Fourth Proportional to 713,275.14, 984,636.23 and 455,489.81

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Solution

The fourth proportional to 713,275.14, 984,636.23 and 455,489.81 is: 628,778.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,275.14 : 984,636.23 = 455,489.81 : x
  2. Step 2: Convert to fraction form
    713,275.14/984,636.23 = 455,489.81/x
  3. Step 3: Cross multiply
    713,275.14x = 984,636.23 × 455,489.81
  4. Step 4: Simplify right side
    713,275.14x = 448,491,762,121.19
  5. Step 5: Solve for x
    x = 448,491,762,121.19/713,275.14
  6. Step 6: Final answer
    x = 628,778.06

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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.