Home / 646,086.42-891,583.38-355,695.57

Finding the Fourth Proportional to 646,086.42, 891,583.38 and 355,695.57

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Solution

The fourth proportional to 646,086.42, 891,583.38 and 355,695.57 is: 490,851.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,086.42 : 891,583.38 = 355,695.57 : x
  2. Step 2: Convert to fraction form
    646,086.42/891,583.38 = 355,695.57/x
  3. Step 3: Cross multiply
    646,086.42x = 891,583.38 × 355,695.57
  4. Step 4: Simplify right side
    646,086.42x = 317,132,258,551.63
  5. Step 5: Solve for x
    x = 317,132,258,551.63/646,086.42
  6. Step 6: Final answer
    x = 490,851.14

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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.