Home / 1,208,997.02-1,668,415.88-665,121.13

Finding the Fourth Proportional to 1,208,997.02, 1,668,415.88 and 665,121.13

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Solution

The fourth proportional to 1,208,997.02, 1,668,415.88 and 665,121.13 is: 917,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,997.02 : 1,668,415.88 = 665,121.13 : x
  2. Step 2: Convert to fraction form
    1,208,997.02/1,668,415.88 = 665,121.13/x
  3. Step 3: Cross multiply
    1,208,997.02x = 1,668,415.88 × 665,121.13
  4. Step 4: Simplify right side
    1,208,997.02x = 1,109,698,643,747.86
  5. Step 5: Solve for x
    x = 1,109,698,643,747.86/1,208,997.02
  6. Step 6: Final answer
    x = 917,867.15

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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.