Home / 938,835.10-1,295,592.78-509,115.12

Finding the Fourth Proportional to 938,835.10, 1,295,592.78 and 509,115.12

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Solution

The fourth proportional to 938,835.10, 1,295,592.78 and 509,115.12 is: 702,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,835.10 : 1,295,592.78 = 509,115.12 : x
  2. Step 2: Convert to fraction form
    938,835.10/1,295,592.78 = 509,115.12/x
  3. Step 3: Cross multiply
    938,835.10x = 1,295,592.78 × 509,115.12
  4. Step 4: Simplify right side
    938,835.10x = 659,605,873,660.83
  5. Step 5: Solve for x
    x = 659,605,873,660.83/938,835.10
  6. Step 6: Final answer
    x = 702,579.05

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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.