Home / 649,278.40-973,255.20-438,937.60

Finding the Fourth Proportional to 649,278.40, 973,255.20 and 438,937.60

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Solution

The fourth proportional to 649,278.40, 973,255.20 and 438,937.60 is: 657,958.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,278.40 : 973,255.20 = 438,937.60 : x
  2. Step 2: Convert to fraction form
    649,278.40/973,255.20 = 438,937.60/x
  3. Step 3: Cross multiply
    649,278.40x = 973,255.20 × 438,937.60
  4. Step 4: Simplify right side
    649,278.40x = 427,198,301,675.52
  5. Step 5: Solve for x
    x = 427,198,301,675.52/649,278.40
  6. Step 6: Final answer
    x = 657,958.59

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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.