Home / 1,208,903.94-1,668,234.76-665,005.21

Finding the Fourth Proportional to 1,208,903.94, 1,668,234.76 and 665,005.21

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Solution

The fourth proportional to 1,208,903.94, 1,668,234.76 and 665,005.21 is: 917,678.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,903.94 : 1,668,234.76 = 665,005.21 : x
  2. Step 2: Convert to fraction form
    1,208,903.94/1,668,234.76 = 665,005.21/x
  3. Step 3: Cross multiply
    1,208,903.94x = 1,668,234.76 × 665,005.21
  4. Step 4: Simplify right side
    1,208,903.94x = 1,109,384,801,070.00
  5. Step 5: Solve for x
    x = 1,109,384,801,070.00/1,208,903.94
  6. Step 6: Final answer
    x = 917,678.21

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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.