Home / 1,186,711.20-1,780,239.60-387,799.20

Finding the Fourth Proportional to 1,186,711.20, 1,780,239.60 and 387,799.20

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Solution

The fourth proportional to 1,186,711.20, 1,780,239.60 and 387,799.20 is: 581,755.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,711.20 : 1,780,239.60 = 387,799.20 : x
  2. Step 2: Convert to fraction form
    1,186,711.20/1,780,239.60 = 387,799.20/x
  3. Step 3: Cross multiply
    1,186,711.20x = 1,780,239.60 × 387,799.20
  4. Step 4: Simplify right side
    1,186,711.20x = 690,375,492,688.32
  5. Step 5: Solve for x
    x = 690,375,492,688.32/1,186,711.20
  6. Step 6: Final answer
    x = 581,755.27

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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.