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Finding the Fourth Proportional to 646,165.28, 891,791.74 and 370,630.62

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Solution

The fourth proportional to 646,165.28, 891,791.74 and 370,630.62 is: 511,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,165.28 : 891,791.74 = 370,630.62 : x
  2. Step 2: Convert to fraction form
    646,165.28/891,791.74 = 370,630.62/x
  3. Step 3: Cross multiply
    646,165.28x = 891,791.74 × 370,630.62
  4. Step 4: Simplify right side
    646,165.28x = 330,525,325,970.37
  5. Step 5: Solve for x
    x = 330,525,325,970.37/646,165.28
  6. Step 6: Final answer
    x = 511,518.24

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1.5x scale

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.