Home / 1,209,406.37-1,668,981.06-665,542.15

Finding the Fourth Proportional to 1,209,406.37, 1,668,981.06 and 665,542.15

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Solution

The fourth proportional to 1,209,406.37, 1,668,981.06 and 665,542.15 is: 918,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,406.37 : 1,668,981.06 = 665,542.15 : x
  2. Step 2: Convert to fraction form
    1,209,406.37/1,668,981.06 = 665,542.15/x
  3. Step 3: Cross multiply
    1,209,406.37x = 1,668,981.06 × 665,542.15
  4. Step 4: Simplify right side
    1,209,406.37x = 1,110,777,238,809.23
  5. Step 5: Solve for x
    x = 1,110,777,238,809.23/1,209,406.37
  6. Step 6: Final answer
    x = 918,448.32

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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.