Home / 698,735.12-964,229.56-388,636.06

Finding the Fourth Proportional to 698,735.12, 964,229.56 and 388,636.06

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Solution

The fourth proportional to 698,735.12, 964,229.56 and 388,636.06 is: 536,303.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,735.12 : 964,229.56 = 388,636.06 : x
  2. Step 2: Convert to fraction form
    698,735.12/964,229.56 = 388,636.06/x
  3. Step 3: Cross multiply
    698,735.12x = 964,229.56 × 388,636.06
  4. Step 4: Simplify right side
    698,735.12x = 374,734,374,723.36
  5. Step 5: Solve for x
    x = 374,734,374,723.36/698,735.12
  6. Step 6: Final answer
    x = 536,303.91

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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.