Home / 649,310.40-973,303.20-438,969.60

Finding the Fourth Proportional to 649,310.40, 973,303.20 and 438,969.60

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Solution

The fourth proportional to 649,310.40, 973,303.20 and 438,969.60 is: 658,006.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,310.40 : 973,303.20 = 438,969.60 : x
  2. Step 2: Convert to fraction form
    649,310.40/973,303.20 = 438,969.60/x
  3. Step 3: Cross multiply
    649,310.40x = 973,303.20 × 438,969.60
  4. Step 4: Simplify right side
    649,310.40x = 427,250,516,382.72
  5. Step 5: Solve for x
    x = 427,250,516,382.72/649,310.40
  6. Step 6: Final answer
    x = 658,006.58

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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.