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Finding the Fourth Proportional to 661,580.32, 992,698.72 and 262,212.26

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Solution

The fourth proportional to 661,580.32, 992,698.72 and 262,212.26 is: 393,448.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,580.32 : 992,698.72 = 262,212.26 : x
  2. Step 2: Convert to fraction form
    661,580.32/992,698.72 = 262,212.26/x
  3. Step 3: Cross multiply
    661,580.32x = 992,698.72 × 262,212.26
  4. Step 4: Simplify right side
    661,580.32x = 260,297,774,870.31
  5. Step 5: Solve for x
    x = 260,297,774,870.31/661,580.32
  6. Step 6: Final answer
    x = 393,448.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.