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Finding the Fourth Proportional to 675,168.35, 931,846.90 and 388,854.21

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Solution

The fourth proportional to 675,168.35, 931,846.90 and 388,854.21 is: 536,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,168.35 : 931,846.90 = 388,854.21 : x
  2. Step 2: Convert to fraction form
    675,168.35/931,846.90 = 388,854.21/x
  3. Step 3: Cross multiply
    675,168.35x = 931,846.90 × 388,854.21
  4. Step 4: Simplify right side
    675,168.35x = 362,352,590,140.45
  5. Step 5: Solve for x
    x = 362,352,590,140.45/675,168.35
  6. Step 6: Final answer
    x = 536,684.80

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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.