Home / 1,390,254.05-2,085,578.43-430,785.05

Finding the Fourth Proportional to 1,390,254.05, 2,085,578.43 and 430,785.05

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Solution

The fourth proportional to 1,390,254.05, 2,085,578.43 and 430,785.05 is: 646,238.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,254.05 : 2,085,578.43 = 430,785.05 : x
  2. Step 2: Convert to fraction form
    1,390,254.05/2,085,578.43 = 430,785.05/x
  3. Step 3: Cross multiply
    1,390,254.05x = 2,085,578.43 × 430,785.05
  4. Step 4: Simplify right side
    1,390,254.05x = 898,436,010,357.68
  5. Step 5: Solve for x
    x = 898,436,010,357.68/1,390,254.05
  6. Step 6: Final answer
    x = 646,238.73

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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.