Home / 1,247,362.68-1,721,627.55-788,185.74

Finding the Fourth Proportional to 1,247,362.68, 1,721,627.55 and 788,185.74

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Solution

The fourth proportional to 1,247,362.68, 1,721,627.55 and 788,185.74 is: 1,087,865.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,362.68 : 1,721,627.55 = 788,185.74 : x
  2. Step 2: Convert to fraction form
    1,247,362.68/1,721,627.55 = 788,185.74/x
  3. Step 3: Cross multiply
    1,247,362.68x = 1,721,627.55 × 788,185.74
  4. Step 4: Simplify right side
    1,247,362.68x = 1,356,962,284,501.14
  5. Step 5: Solve for x
    x = 1,356,962,284,501.14/1,247,362.68
  6. Step 6: Final answer
    x = 1,087,865.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.