Home / 678,960.90-936,576.27-423,869.22

Finding the Fourth Proportional to 678,960.90, 936,576.27 and 423,869.22

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Solution

The fourth proportional to 678,960.90, 936,576.27 and 423,869.22 is: 584,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,960.90 : 936,576.27 = 423,869.22 : x
  2. Step 2: Convert to fraction form
    678,960.90/936,576.27 = 423,869.22/x
  3. Step 3: Cross multiply
    678,960.90x = 936,576.27 × 423,869.22
  4. Step 4: Simplify right side
    678,960.90x = 396,985,853,035.41
  5. Step 5: Solve for x
    x = 396,985,853,035.41/678,960.90
  6. Step 6: Final answer
    x = 584,696.19

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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.