Home / 1,921,666.86-2,882,619.16-642,389.45

Finding the Fourth Proportional to 1,921,666.86, 2,882,619.16 and 642,389.45

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Solution

The fourth proportional to 1,921,666.86, 2,882,619.16 and 642,389.45 is: 963,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,666.86 : 2,882,619.16 = 642,389.45 : x
  2. Step 2: Convert to fraction form
    1,921,666.86/2,882,619.16 = 642,389.45/x
  3. Step 3: Cross multiply
    1,921,666.86x = 2,882,619.16 × 642,389.45
  4. Step 4: Simplify right side
    1,921,666.86x = 1,851,764,120,732.79
  5. Step 5: Solve for x
    x = 1,851,764,120,732.79/1,921,666.86
  6. Step 6: Final answer
    x = 963,623.90

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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.