Home / 715,926.66-987,952.23-393,617.58

Finding the Fourth Proportional to 715,926.66, 987,952.23 and 393,617.58

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Solution

The fourth proportional to 715,926.66, 987,952.23 and 393,617.58 is: 543,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,926.66 : 987,952.23 = 393,617.58 : x
  2. Step 2: Convert to fraction form
    715,926.66/987,952.23 = 393,617.58/x
  3. Step 3: Cross multiply
    715,926.66x = 987,952.23 × 393,617.58
  4. Step 4: Simplify right side
    715,926.66x = 388,875,365,928.20
  5. Step 5: Solve for x
    x = 388,875,365,928.20/715,926.66
  6. Step 6: Final answer
    x = 543,177.66

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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.