Home / 780,105.72-1,170,158.58-274,547.64

Finding the Fourth Proportional to 780,105.72, 1,170,158.58 and 274,547.64

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Solution

The fourth proportional to 780,105.72, 1,170,158.58 and 274,547.64 is: 411,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,105.72 : 1,170,158.58 = 274,547.64 : x
  2. Step 2: Convert to fraction form
    780,105.72/1,170,158.58 = 274,547.64/x
  3. Step 3: Cross multiply
    780,105.72x = 1,170,158.58 × 274,547.64
  4. Step 4: Simplify right side
    780,105.72x = 321,264,276,564.75
  5. Step 5: Solve for x
    x = 321,264,276,564.75/780,105.72
  6. Step 6: Final answer
    x = 411,821.46

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Double scale
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Similar ratio
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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.