Home / 786,231.48-1,179,119.16-306,352.25

Finding the Fourth Proportional to 786,231.48, 1,179,119.16 and 306,352.25

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Solution

The fourth proportional to 786,231.48, 1,179,119.16 and 306,352.25 is: 459,439.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,231.48 : 1,179,119.16 = 306,352.25 : x
  2. Step 2: Convert to fraction form
    786,231.48/1,179,119.16 = 306,352.25/x
  3. Step 3: Cross multiply
    786,231.48x = 1,179,119.16 × 306,352.25
  4. Step 4: Simplify right side
    786,231.48x = 361,225,801,788.51
  5. Step 5: Solve for x
    x = 361,225,801,788.51/786,231.48
  6. Step 6: Final answer
    x = 459,439.50

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Half scale
Find fourth proportional to 1,572,462.96, 2,358,238.32 and 612,704.49
Double scale
Find fourth proportional to 786,232.48, 1,179,120.66 and 306,353.25
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.