Home / 1,242,345.90-1,863,579.06-343,767.81

Finding the Fourth Proportional to 1,242,345.90, 1,863,579.06 and 343,767.81

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Solution

The fourth proportional to 1,242,345.90, 1,863,579.06 and 343,767.81 is: 515,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,345.90 : 1,863,579.06 = 343,767.81 : x
  2. Step 2: Convert to fraction form
    1,242,345.90/1,863,579.06 = 343,767.81/x
  3. Step 3: Cross multiply
    1,242,345.90x = 1,863,579.06 × 343,767.81
  4. Step 4: Simplify right side
    1,242,345.90x = 640,638,492,218.06
  5. Step 5: Solve for x
    x = 640,638,492,218.06/1,242,345.90
  6. Step 6: Final answer
    x = 515,668.38

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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.