Home / 1,186,712.20-1,780,241.10-387,800.20

Finding the Fourth Proportional to 1,186,712.20, 1,780,241.10 and 387,800.20

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Solution

The fourth proportional to 1,186,712.20, 1,780,241.10 and 387,800.20 is: 581,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,712.20 : 1,780,241.10 = 387,800.20 : x
  2. Step 2: Convert to fraction form
    1,186,712.20/1,780,241.10 = 387,800.20/x
  3. Step 3: Cross multiply
    1,186,712.20x = 1,780,241.10 × 387,800.20
  4. Step 4: Simplify right side
    1,186,712.20x = 690,377,854,628.22
  5. Step 5: Solve for x
    x = 690,377,854,628.22/1,186,712.20
  6. Step 6: Final answer
    x = 581,756.77

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1.5x scale

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.