Home / 939,853.87-1,296,999.65-510,134.09

Finding the Fourth Proportional to 939,853.87, 1,296,999.65 and 510,134.09

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Solution

The fourth proportional to 939,853.87, 1,296,999.65 and 510,134.09 is: 703,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,853.87 : 1,296,999.65 = 510,134.09 : x
  2. Step 2: Convert to fraction form
    939,853.87/1,296,999.65 = 510,134.09/x
  3. Step 3: Cross multiply
    939,853.87x = 1,296,999.65 × 510,134.09
  4. Step 4: Simplify right side
    939,853.87x = 661,643,736,183.07
  5. Step 5: Solve for x
    x = 661,643,736,183.07/939,853.87
  6. Step 6: Final answer
    x = 703,985.75

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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.