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Finding the Fourth Proportional to 646,194.68, 891,757.14 and 355,840.28

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Solution

The fourth proportional to 646,194.68, 891,757.14 and 355,840.28 is: 491,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,194.68 : 891,757.14 = 355,840.28 : x
  2. Step 2: Convert to fraction form
    646,194.68/891,757.14 = 355,840.28/x
  3. Step 3: Cross multiply
    646,194.68x = 891,757.14 × 355,840.28
  4. Step 4: Simplify right side
    646,194.68x = 317,323,110,389.60
  5. Step 5: Solve for x
    x = 317,323,110,389.60/646,194.68
  6. Step 6: Final answer
    x = 491,064.26

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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.