Home / 1,298,673.90-1,792,143.54-717,921.51

Finding the Fourth Proportional to 1,298,673.90, 1,792,143.54 and 717,921.51

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Solution

The fourth proportional to 1,298,673.90, 1,792,143.54 and 717,921.51 is: 990,717.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,673.90 : 1,792,143.54 = 717,921.51 : x
  2. Step 2: Convert to fraction form
    1,298,673.90/1,792,143.54 = 717,921.51/x
  3. Step 3: Cross multiply
    1,298,673.90x = 1,792,143.54 × 717,921.51
  4. Step 4: Simplify right side
    1,298,673.90x = 1,286,618,396,373.55
  5. Step 5: Solve for x
    x = 1,286,618,396,373.55/1,298,673.90
  6. Step 6: Final answer
    x = 990,717.07

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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.