Home / 1,209,384.98-1,668,909.42-665,469.88

Finding the Fourth Proportional to 1,209,384.98, 1,668,909.42 and 665,469.88

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Solution

The fourth proportional to 1,209,384.98, 1,668,909.42 and 665,469.88 is: 918,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,384.98 : 1,668,909.42 = 665,469.88 : x
  2. Step 2: Convert to fraction form
    1,209,384.98/1,668,909.42 = 665,469.88/x
  3. Step 3: Cross multiply
    1,209,384.98x = 1,668,909.42 × 665,469.88
  4. Step 4: Simplify right side
    1,209,384.98x = 1,110,608,947,286.00
  5. Step 5: Solve for x
    x = 1,110,608,947,286.00/1,209,384.98
  6. Step 6: Final answer
    x = 918,325.40

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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.