Home / 1,030,856.29-1,422,629.60-643,900.81

Finding the Fourth Proportional to 1,030,856.29, 1,422,629.60 and 643,900.81

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Solution

The fourth proportional to 1,030,856.29, 1,422,629.60 and 643,900.81 is: 888,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,856.29 : 1,422,629.60 = 643,900.81 : x
  2. Step 2: Convert to fraction form
    1,030,856.29/1,422,629.60 = 643,900.81/x
  3. Step 3: Cross multiply
    1,030,856.29x = 1,422,629.60 × 643,900.81
  4. Step 4: Simplify right side
    1,030,856.29x = 916,032,351,769.98
  5. Step 5: Solve for x
    x = 916,032,351,769.98/1,030,856.29
  6. Step 6: Final answer
    x = 888,613.05

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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.