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Finding the Fourth Proportional to 1,248,941.22, 1,723,580.60 and 765,412.94

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Solution

The fourth proportional to 1,248,941.22, 1,723,580.60 and 765,412.94 is: 1,056,295.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,941.22 : 1,723,580.60 = 765,412.94 : x
  2. Step 2: Convert to fraction form
    1,248,941.22/1,723,580.60 = 765,412.94/x
  3. Step 3: Cross multiply
    1,248,941.22x = 1,723,580.60 × 765,412.94
  4. Step 4: Simplify right side
    1,248,941.22x = 1,319,250,881,928.00
  5. Step 5: Solve for x
    x = 1,319,250,881,928.00/1,248,941.22
  6. Step 6: Final answer
    x = 1,056,295.41

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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.