Home / 715,945.51-988,008.41-393,676.35

Finding the Fourth Proportional to 715,945.51, 988,008.41 and 393,676.35

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Solution

The fourth proportional to 715,945.51, 988,008.41 and 393,676.35 is: 543,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,945.51 : 988,008.41 = 393,676.35 : x
  2. Step 2: Convert to fraction form
    715,945.51/988,008.41 = 393,676.35/x
  3. Step 3: Cross multiply
    715,945.51x = 988,008.41 × 393,676.35
  4. Step 4: Simplify right side
    715,945.51x = 388,955,544,618.10
  5. Step 5: Solve for x
    x = 388,955,544,618.10/715,945.51
  6. Step 6: Final answer
    x = 543,275.35

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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.