Home / 649,280.40-973,258.20-438,939.60

Finding the Fourth Proportional to 649,280.40, 973,258.20 and 438,939.60

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Solution

The fourth proportional to 649,280.40, 973,258.20 and 438,939.60 is: 657,961.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,280.40 : 973,258.20 = 438,939.60 : x
  2. Step 2: Convert to fraction form
    649,280.40/973,258.20 = 438,939.60/x
  3. Step 3: Cross multiply
    649,280.40x = 973,258.20 × 438,939.60
  4. Step 4: Simplify right side
    649,280.40x = 427,201,565,004.72
  5. Step 5: Solve for x
    x = 427,201,565,004.72/649,280.40
  6. Step 6: Final answer
    x = 657,961.59

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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.