Home / 939,313.85-1,296,253.56-509,593.86

Finding the Fourth Proportional to 939,313.85, 1,296,253.56 and 509,593.86

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Solution

The fourth proportional to 939,313.85, 1,296,253.56 and 509,593.86 is: 703,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,313.85 : 1,296,253.56 = 509,593.86 : x
  2. Step 2: Convert to fraction form
    939,313.85/1,296,253.56 = 509,593.86/x
  3. Step 3: Cross multiply
    939,313.85x = 1,296,253.56 × 509,593.86
  4. Step 4: Simplify right side
    939,313.85x = 660,562,857,090.12
  5. Step 5: Solve for x
    x = 660,562,857,090.12/939,313.85
  6. Step 6: Final answer
    x = 703,239.78

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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.