Home / 1,138,112.64-1,707,132.24-339,400.80

Finding the Fourth Proportional to 1,138,112.64, 1,707,132.24 and 339,400.80

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Solution

The fourth proportional to 1,138,112.64, 1,707,132.24 and 339,400.80 is: 509,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,112.64 : 1,707,132.24 = 339,400.80 : x
  2. Step 2: Convert to fraction form
    1,138,112.64/1,707,132.24 = 339,400.80/x
  3. Step 3: Cross multiply
    1,138,112.64x = 1,707,132.24 × 339,400.80
  4. Step 4: Simplify right side
    1,138,112.64x = 579,402,047,961.79
  5. Step 5: Solve for x
    x = 579,402,047,961.79/1,138,112.64
  6. Step 6: Final answer
    x = 509,090.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.