Home / 938,840.64-1,295,600.38-509,120.64

Finding the Fourth Proportional to 938,840.64, 1,295,600.38 and 509,120.64

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Solution

The fourth proportional to 938,840.64, 1,295,600.38 and 509,120.64 is: 702,586.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,840.64 : 1,295,600.38 = 509,120.64 : x
  2. Step 2: Convert to fraction form
    938,840.64/1,295,600.38 = 509,120.64/x
  3. Step 3: Cross multiply
    938,840.64x = 1,295,600.38 × 509,120.64
  4. Step 4: Simplify right side
    938,840.64x = 659,616,894,649.84
  5. Step 5: Solve for x
    x = 659,616,894,649.84/938,840.64
  6. Step 6: Final answer
    x = 702,586.64

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.