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Finding the Fourth Proportional to 646,250.66, 891,245.40 and 404,555.30

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Solution

The fourth proportional to 646,250.66, 891,245.40 and 404,555.30 is: 557,922.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,250.66 : 891,245.40 = 404,555.30 : x
  2. Step 2: Convert to fraction form
    646,250.66/891,245.40 = 404,555.30/x
  3. Step 3: Cross multiply
    646,250.66x = 891,245.40 × 404,555.30
  4. Step 4: Simplify right side
    646,250.66x = 360,558,050,170.62
  5. Step 5: Solve for x
    x = 360,558,050,170.62/646,250.66
  6. Step 6: Final answer
    x = 557,922.91

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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.