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Finding the Fourth Proportional to 1,168,509, 1,612,542.42 and 631,965

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Solution

The fourth proportional to 1,168,509, 1,612,542.42 and 631,965 is: 872,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,509 : 1,612,542.42 = 631,965 : x
  2. Step 2: Convert to fraction form
    1,168,509/1,612,542.42 = 631,965/x
  3. Step 3: Cross multiply
    1,168,509x = 1,612,542.42 × 631,965
  4. Step 4: Simplify right side
    1,168,509x = 1,019,070,370,455.30
  5. Step 5: Solve for x
    x = 1,019,070,370,455.30/1,168,509
  6. Step 6: Final answer
    x = 872,111.70

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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.