Home / 1,208,832.47-1,668,192.65-665,009.60

Finding the Fourth Proportional to 1,208,832.47, 1,668,192.65 and 665,009.60

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Solution

The fourth proportional to 1,208,832.47, 1,668,192.65 and 665,009.60 is: 917,715.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,832.47 : 1,668,192.65 = 665,009.60 : x
  2. Step 2: Convert to fraction form
    1,208,832.47/1,668,192.65 = 665,009.60/x
  3. Step 3: Cross multiply
    1,208,832.47x = 1,668,192.65 × 665,009.60
  4. Step 4: Simplify right side
    1,208,832.47x = 1,109,364,127,744.87
  5. Step 5: Solve for x
    x = 1,109,364,127,744.87/1,208,832.47
  6. Step 6: Final answer
    x = 917,715.37

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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.