Home / 1,187,419.20-1,777,629.60-788,510.40

Finding the Fourth Proportional to 1,187,419.20, 1,777,629.60 and 788,510.40

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Solution

The fourth proportional to 1,187,419.20, 1,777,629.60 and 788,510.40 is: 1,180,441.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,419.20 : 1,777,629.60 = 788,510.40 : x
  2. Step 2: Convert to fraction form
    1,187,419.20/1,777,629.60 = 788,510.40/x
  3. Step 3: Cross multiply
    1,187,419.20x = 1,777,629.60 × 788,510.40
  4. Step 4: Simplify right side
    1,187,419.20x = 1,401,679,426,947.84
  5. Step 5: Solve for x
    x = 1,401,679,426,947.84/1,187,419.20
  6. Step 6: Final answer
    x = 1,180,441.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.