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Finding the Fourth Proportional to 698,846.32, 964,395.21 and 388,747.39

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Solution

The fourth proportional to 698,846.32, 964,395.21 and 388,747.39 is: 536,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,846.32 : 964,395.21 = 388,747.39 : x
  2. Step 2: Convert to fraction form
    698,846.32/964,395.21 = 388,747.39/x
  3. Step 3: Cross multiply
    698,846.32x = 964,395.21 × 388,747.39
  4. Step 4: Simplify right side
    698,846.32x = 374,906,116,938.23
  5. Step 5: Solve for x
    x = 374,906,116,938.23/698,846.32
  6. Step 6: Final answer
    x = 536,464.32

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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.