Home / 678,806.07-1,018,193.36-341,756.23

Finding the Fourth Proportional to 678,806.07, 1,018,193.36 and 341,756.23

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Solution

The fourth proportional to 678,806.07, 1,018,193.36 and 341,756.23 is: 512,626.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,806.07 : 1,018,193.36 = 341,756.23 : x
  2. Step 2: Convert to fraction form
    678,806.07/1,018,193.36 = 341,756.23/x
  3. Step 3: Cross multiply
    678,806.07x = 1,018,193.36 × 341,756.23
  4. Step 4: Simplify right side
    678,806.07x = 347,973,921,779.48
  5. Step 5: Solve for x
    x = 347,973,921,779.48/678,806.07
  6. Step 6: Final answer
    x = 512,626.41

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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.