Home / 646,076.27-891,593.70-355,721.60

Finding the Fourth Proportional to 646,076.27, 891,593.70 and 355,721.60

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Solution

The fourth proportional to 646,076.27, 891,593.70 and 355,721.60 is: 490,900.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,076.27 : 891,593.70 = 355,721.60 : x
  2. Step 2: Convert to fraction form
    646,076.27/891,593.70 = 355,721.60/x
  3. Step 3: Cross multiply
    646,076.27x = 891,593.70 × 355,721.60
  4. Step 4: Simplify right side
    646,076.27x = 317,159,137,513.92
  5. Step 5: Solve for x
    x = 317,159,137,513.92/646,076.27
  6. Step 6: Final answer
    x = 490,900.46

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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.