Home / 1,209,933.61-1,669,756.04-666,119.96

Finding the Fourth Proportional to 1,209,933.61, 1,669,756.04 and 666,119.96

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Solution

The fourth proportional to 1,209,933.61, 1,669,756.04 and 666,119.96 is: 919,271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,933.61 : 1,669,756.04 = 666,119.96 : x
  2. Step 2: Convert to fraction form
    1,209,933.61/1,669,756.04 = 666,119.96/x
  3. Step 3: Cross multiply
    1,209,933.61x = 1,669,756.04 × 666,119.96
  4. Step 4: Simplify right side
    1,209,933.61x = 1,112,257,826,574.56
  5. Step 5: Solve for x
    x = 1,112,257,826,574.56/1,209,933.61
  6. Step 6: Final answer
    x = 919,271.78

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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.