Home / 612,480.07-918,720.11-191,788.75

Finding the Fourth Proportional to 612,480.07, 918,720.11 and 191,788.75

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Solution

The fourth proportional to 612,480.07, 918,720.11 and 191,788.75 is: 287,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,480.07 : 918,720.11 = 191,788.75 : x
  2. Step 2: Convert to fraction form
    612,480.07/918,720.11 = 191,788.75/x
  3. Step 3: Cross multiply
    612,480.07x = 918,720.11 × 191,788.75
  4. Step 4: Simplify right side
    612,480.07x = 176,200,181,496.76
  5. Step 5: Solve for x
    x = 176,200,181,496.76/612,480.07
  6. Step 6: Final answer
    x = 287,683.13

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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.