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Finding the Fourth Proportional to 678,993.72, 937,017.96 and 373,065.18

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Solution

The fourth proportional to 678,993.72, 937,017.96 and 373,065.18 is: 514,833.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,993.72 : 937,017.96 = 373,065.18 : x
  2. Step 2: Convert to fraction form
    678,993.72/937,017.96 = 373,065.18/x
  3. Step 3: Cross multiply
    678,993.72x = 937,017.96 × 373,065.18
  4. Step 4: Simplify right side
    678,993.72x = 349,568,773,910.63
  5. Step 5: Solve for x
    x = 349,568,773,910.63/678,993.72
  6. Step 6: Final answer
    x = 514,833.59

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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.