Home / 939,255.72-1,296,172.24-509,535.84

Finding the Fourth Proportional to 939,255.72, 1,296,172.24 and 509,535.84

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Solution

The fourth proportional to 939,255.72, 1,296,172.24 and 509,535.84 is: 703,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,255.72 : 1,296,172.24 = 509,535.84 : x
  2. Step 2: Convert to fraction form
    939,255.72/1,296,172.24 = 509,535.84/x
  3. Step 3: Cross multiply
    939,255.72x = 1,296,172.24 × 509,535.84
  4. Step 4: Simplify right side
    939,255.72x = 660,446,211,093.08
  5. Step 5: Solve for x
    x = 660,446,211,093.08/939,255.72
  6. Step 6: Final answer
    x = 703,159.10

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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.