Home / 678,868.26-1,018,302.34-173,430.33

Finding the Fourth Proportional to 678,868.26, 1,018,302.34 and 173,430.33

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Solution

The fourth proportional to 678,868.26, 1,018,302.34 and 173,430.33 is: 260,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,868.26 : 1,018,302.34 = 173,430.33 : x
  2. Step 2: Convert to fraction form
    678,868.26/1,018,302.34 = 173,430.33/x
  3. Step 3: Cross multiply
    678,868.26x = 1,018,302.34 × 173,430.33
  4. Step 4: Simplify right side
    678,868.26x = 176,604,510,865.97
  5. Step 5: Solve for x
    x = 176,604,510,865.97/678,868.26
  6. Step 6: Final answer
    x = 260,145.48

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.