Home / 681,039.40-1,020,003.90-401,103.40

Finding the Fourth Proportional to 681,039.40, 1,020,003.90 and 401,103.40

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Solution

The fourth proportional to 681,039.40, 1,020,003.90 and 401,103.40 is: 600,739.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,039.40 : 1,020,003.90 = 401,103.40 : x
  2. Step 2: Convert to fraction form
    681,039.40/1,020,003.90 = 401,103.40/x
  3. Step 3: Cross multiply
    681,039.40x = 1,020,003.90 × 401,103.40
  4. Step 4: Simplify right side
    681,039.40x = 409,127,032,303.26
  5. Step 5: Solve for x
    x = 409,127,032,303.26/681,039.40
  6. Step 6: Final answer
    x = 600,739.15

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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.