Home / 1,209,711.55-1,669,388.79-665,835.70

Finding the Fourth Proportional to 1,209,711.55, 1,669,388.79 and 665,835.70

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Solution

The fourth proportional to 1,209,711.55, 1,669,388.79 and 665,835.70 is: 918,846.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,711.55 : 1,669,388.79 = 665,835.70 : x
  2. Step 2: Convert to fraction form
    1,209,711.55/1,669,388.79 = 665,835.70/x
  3. Step 3: Cross multiply
    1,209,711.55x = 1,669,388.79 × 665,835.70
  4. Step 4: Simplify right side
    1,209,711.55x = 1,111,538,653,561.80
  5. Step 5: Solve for x
    x = 1,111,538,653,561.80/1,209,711.55
  6. Step 6: Final answer
    x = 918,846.03

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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.