Home / 790,009.07-1,090,211.81-445,917.42

Finding the Fourth Proportional to 790,009.07, 1,090,211.81 and 445,917.42

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Solution

The fourth proportional to 790,009.07, 1,090,211.81 and 445,917.42 is: 615,365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,009.07 : 1,090,211.81 = 445,917.42 : x
  2. Step 2: Convert to fraction form
    790,009.07/1,090,211.81 = 445,917.42/x
  3. Step 3: Cross multiply
    790,009.07x = 1,090,211.81 × 445,917.42
  4. Step 4: Simplify right side
    790,009.07x = 486,144,435,339.14
  5. Step 5: Solve for x
    x = 486,144,435,339.14/790,009.07
  6. Step 6: Final answer
    x = 615,365.64

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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.