Home / 7,767,345.40-11,649,149.70-3,978,878.20

Finding the Fourth Proportional to 7,767,345.40, 11,649,149.70 and 3,978,878.20

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Solution

The fourth proportional to 7,767,345.40, 11,649,149.70 and 3,978,878.20 is: 5,967,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,767,345.40 : 11,649,149.70 = 3,978,878.20 : x
  2. Step 2: Convert to fraction form
    7,767,345.40/11,649,149.70 = 3,978,878.20/x
  3. Step 3: Cross multiply
    7,767,345.40x = 11,649,149.70 × 3,978,878.20
  4. Step 4: Simplify right side
    7,767,345.40x = 46,350,547,789,866.54
  5. Step 5: Solve for x
    x = 46,350,547,789,866.54/7,767,345.40
  6. Step 6: Final answer
    x = 5,967,360.20

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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.