Home / 1,288,909-1,778,695.37-708,169.58

Finding the Fourth Proportional to 1,288,909, 1,778,695.37 and 708,169.58

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Solution

The fourth proportional to 1,288,909, 1,778,695.37 and 708,169.58 is: 977,274.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,909 : 1,778,695.37 = 708,169.58 : x
  2. Step 2: Convert to fraction form
    1,288,909/1,778,695.37 = 708,169.58/x
  3. Step 3: Cross multiply
    1,288,909x = 1,778,695.37 × 708,169.58
  4. Step 4: Simplify right side
    1,288,909x = 1,259,617,953,120.84
  5. Step 5: Solve for x
    x = 1,259,617,953,120.84/1,288,909
  6. Step 6: Final answer
    x = 977,274.54

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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.