Home / 1,289,077.56-1,778,925.78-716,171.40

Finding the Fourth Proportional to 1,289,077.56, 1,778,925.78 and 716,171.40

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Solution

The fourth proportional to 1,289,077.56, 1,778,925.78 and 716,171.40 is: 988,315.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,077.56 : 1,778,925.78 = 716,171.40 : x
  2. Step 2: Convert to fraction form
    1,289,077.56/1,778,925.78 = 716,171.40/x
  3. Step 3: Cross multiply
    1,289,077.56x = 1,778,925.78 × 716,171.40
  4. Step 4: Simplify right side
    1,289,077.56x = 1,274,015,766,358.69
  5. Step 5: Solve for x
    x = 1,274,015,766,358.69/1,289,077.56
  6. Step 6: Final answer
    x = 988,315.84

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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.