Home / 1,208,721.84-1,668,001.32-664,857.60

Finding the Fourth Proportional to 1,208,721.84, 1,668,001.32 and 664,857.60

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Solution

The fourth proportional to 1,208,721.84, 1,668,001.32 and 664,857.60 is: 917,484.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,721.84 : 1,668,001.32 = 664,857.60 : x
  2. Step 2: Convert to fraction form
    1,208,721.84/1,668,001.32 = 664,857.60/x
  3. Step 3: Cross multiply
    1,208,721.84x = 1,668,001.32 × 664,857.60
  4. Step 4: Simplify right side
    1,208,721.84x = 1,108,983,354,412.03
  5. Step 5: Solve for x
    x = 1,108,983,354,412.03/1,208,721.84
  6. Step 6: Final answer
    x = 917,484.34

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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.