Home / 1,240,390.26-1,860,850.40-430,799.72

Finding the Fourth Proportional to 1,240,390.26, 1,860,850.40 and 430,799.72

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Solution

The fourth proportional to 1,240,390.26, 1,860,850.40 and 430,799.72 is: 646,291.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,390.26 : 1,860,850.40 = 430,799.72 : x
  2. Step 2: Convert to fraction form
    1,240,390.26/1,860,850.40 = 430,799.72/x
  3. Step 3: Cross multiply
    1,240,390.26x = 1,860,850.40 × 430,799.72
  4. Step 4: Simplify right side
    1,240,390.26x = 801,653,819,823.64
  5. Step 5: Solve for x
    x = 801,653,819,823.64/1,240,390.26
  6. Step 6: Final answer
    x = 646,291.61

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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.