Home / 905,284.26-1,249,287.30-491,817.60

Finding the Fourth Proportional to 905,284.26, 1,249,287.30 and 491,817.60

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Solution

The fourth proportional to 905,284.26, 1,249,287.30 and 491,817.60 is: 678,705.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,284.26 : 1,249,287.30 = 491,817.60 : x
  2. Step 2: Convert to fraction form
    905,284.26/1,249,287.30 = 491,817.60/x
  3. Step 3: Cross multiply
    905,284.26x = 1,249,287.30 × 491,817.60
  4. Step 4: Simplify right side
    905,284.26x = 614,421,481,596.48
  5. Step 5: Solve for x
    x = 614,421,481,596.48/905,284.26
  6. Step 6: Final answer
    x = 678,705.58

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Double scale
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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.