Home / 1,245,128.60-1,867,923.30-403,707.80

Finding the Fourth Proportional to 1,245,128.60, 1,867,923.30 and 403,707.80

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Solution

The fourth proportional to 1,245,128.60, 1,867,923.30 and 403,707.80 is: 605,636.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,128.60 : 1,867,923.30 = 403,707.80 : x
  2. Step 2: Convert to fraction form
    1,245,128.60/1,867,923.30 = 403,707.80/x
  3. Step 3: Cross multiply
    1,245,128.60x = 1,867,923.30 × 403,707.80
  4. Step 4: Simplify right side
    1,245,128.60x = 754,095,206,011.74
  5. Step 5: Solve for x
    x = 754,095,206,011.74/1,245,128.60
  6. Step 6: Final answer
    x = 605,636.40

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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.