Home / 649,290.40-973,273.20-438,949.60

Finding the Fourth Proportional to 649,290.40, 973,273.20 and 438,949.60

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Solution

The fourth proportional to 649,290.40, 973,273.20 and 438,949.60 is: 657,976.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,290.40 : 973,273.20 = 438,949.60 : x
  2. Step 2: Convert to fraction form
    649,290.40/973,273.20 = 438,949.60/x
  3. Step 3: Cross multiply
    649,290.40x = 973,273.20 × 438,949.60
  4. Step 4: Simplify right side
    649,290.40x = 427,217,881,830.72
  5. Step 5: Solve for x
    x = 427,217,881,830.72/649,290.40
  6. Step 6: Final answer
    x = 657,976.59

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1.5x scale

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.