Home / 641,975.04-885,914.56-355,488.96

Finding the Fourth Proportional to 641,975.04, 885,914.56 and 355,488.96

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Solution

The fourth proportional to 641,975.04, 885,914.56 and 355,488.96 is: 490,568.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,975.04 : 885,914.56 = 355,488.96 : x
  2. Step 2: Convert to fraction form
    641,975.04/885,914.56 = 355,488.96/x
  3. Step 3: Cross multiply
    641,975.04x = 885,914.56 × 355,488.96
  4. Step 4: Simplify right side
    641,975.04x = 314,932,845,583.26
  5. Step 5: Solve for x
    x = 314,932,845,583.26/641,975.04
  6. Step 6: Final answer
    x = 490,568.68

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Double scale
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Similar ratio
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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.