Home / 1,208,838.47-1,668,200.92-665,015.60

Finding the Fourth Proportional to 1,208,838.47, 1,668,200.92 and 665,015.60

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Solution

The fourth proportional to 1,208,838.47, 1,668,200.92 and 665,015.60 is: 917,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,838.47 : 1,668,200.92 = 665,015.60 : x
  2. Step 2: Convert to fraction form
    1,208,838.47/1,668,200.92 = 665,015.60/x
  3. Step 3: Cross multiply
    1,208,838.47x = 1,668,200.92 × 665,015.60
  4. Step 4: Simplify right side
    1,208,838.47x = 1,109,379,638,242.32
  5. Step 5: Solve for x
    x = 1,109,379,638,242.32/1,208,838.47
  6. Step 6: Final answer
    x = 917,723.64

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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.