Home / 1,137,987.48-1,707,235.48-428,021.68

Finding the Fourth Proportional to 1,137,987.48, 1,707,235.48 and 428,021.68

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Solution

The fourth proportional to 1,137,987.48, 1,707,235.48 and 428,021.68 is: 642,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,987.48 : 1,707,235.48 = 428,021.68 : x
  2. Step 2: Convert to fraction form
    1,137,987.48/1,707,235.48 = 428,021.68/x
  3. Step 3: Cross multiply
    1,137,987.48x = 1,707,235.48 × 428,021.68
  4. Step 4: Simplify right side
    1,137,987.48x = 730,733,798,305.21
  5. Step 5: Solve for x
    x = 730,733,798,305.21/1,137,987.48
  6. Step 6: Final answer
    x = 642,128.15

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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.