Home / 740,518.09-1,110,815.18-208,080.64

Finding the Fourth Proportional to 740,518.09, 1,110,815.18 and 208,080.64

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Solution

The fourth proportional to 740,518.09, 1,110,815.18 and 208,080.64 is: 312,131.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,518.09 : 1,110,815.18 = 208,080.64 : x
  2. Step 2: Convert to fraction form
    740,518.09/1,110,815.18 = 208,080.64/x
  3. Step 3: Cross multiply
    740,518.09x = 1,110,815.18 × 208,080.64
  4. Step 4: Simplify right side
    740,518.09x = 231,139,133,576.12
  5. Step 5: Solve for x
    x = 231,139,133,576.12/740,518.09
  6. Step 6: Final answer
    x = 312,131.65

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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.