Home / 715,810.26-987,837.02-393,528.46

Finding the Fourth Proportional to 715,810.26, 987,837.02 and 393,528.46

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Solution

The fourth proportional to 715,810.26, 987,837.02 and 393,528.46 is: 543,079.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,810.26 : 987,837.02 = 393,528.46 : x
  2. Step 2: Convert to fraction form
    715,810.26/987,837.02 = 393,528.46/x
  3. Step 3: Cross multiply
    715,810.26x = 987,837.02 × 393,528.46
  4. Step 4: Simplify right side
    715,810.26x = 388,741,981,211.59
  5. Step 5: Solve for x
    x = 388,741,981,211.59/715,810.26
  6. Step 6: Final answer
    x = 543,079.64

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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.