Home / 1,038,998.30-1,559,481.60-640,417.55

Finding the Fourth Proportional to 1,038,998.30, 1,559,481.60 and 640,417.55

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Solution

The fourth proportional to 1,038,998.30, 1,559,481.60 and 640,417.55 is: 961,232.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,998.30 : 1,559,481.60 = 640,417.55 : x
  2. Step 2: Convert to fraction form
    1,038,998.30/1,559,481.60 = 640,417.55/x
  3. Step 3: Cross multiply
    1,038,998.30x = 1,559,481.60 × 640,417.55
  4. Step 4: Simplify right side
    1,038,998.30x = 998,719,385,542.08
  5. Step 5: Solve for x
    x = 998,719,385,542.08/1,038,998.30
  6. Step 6: Final answer
    x = 961,232.94

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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.