Home / 1,209,396.39-1,668,925.17-665,481.32

Finding the Fourth Proportional to 1,209,396.39, 1,668,925.17 and 665,481.32

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Solution

The fourth proportional to 1,209,396.39, 1,668,925.17 and 665,481.32 is: 918,341.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,396.39 : 1,668,925.17 = 665,481.32 : x
  2. Step 2: Convert to fraction form
    1,209,396.39/1,668,925.17 = 665,481.32/x
  3. Step 3: Cross multiply
    1,209,396.39x = 1,668,925.17 × 665,481.32
  4. Step 4: Simplify right side
    1,209,396.39x = 1,110,638,525,112.82
  5. Step 5: Solve for x
    x = 1,110,638,525,112.82/1,209,396.39
  6. Step 6: Final answer
    x = 918,341.19

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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.