Home / 640,941.40-961,412.10-539,464.60

Finding the Fourth Proportional to 640,941.40, 961,412.10 and 539,464.60

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Solution

The fourth proportional to 640,941.40, 961,412.10 and 539,464.60 is: 809,196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,941.40 : 961,412.10 = 539,464.60 : x
  2. Step 2: Convert to fraction form
    640,941.40/961,412.10 = 539,464.60/x
  3. Step 3: Cross multiply
    640,941.40x = 961,412.10 × 539,464.60
  4. Step 4: Simplify right side
    640,941.40x = 518,647,793,961.66
  5. Step 5: Solve for x
    x = 518,647,793,961.66/640,941.40
  6. Step 6: Final answer
    x = 809,196.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.