Home / 7,187,178-9,917,178.12-4,130,821.20

Finding the Fourth Proportional to 7,187,178, 9,917,178.12 and 4,130,821.20

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Solution

The fourth proportional to 7,187,178, 9,917,178.12 and 4,130,821.20 is: 5,699,885.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187,178 : 9,917,178.12 = 4,130,821.20 : x
  2. Step 2: Convert to fraction form
    7,187,178/9,917,178.12 = 4,130,821.20/x
  3. Step 3: Cross multiply
    7,187,178x = 9,917,178.12 × 4,130,821.20
  4. Step 4: Simplify right side
    7,187,178x = 40,966,089,622,272.14
  5. Step 5: Solve for x
    x = 40,966,089,622,272.14/7,187,178
  6. Step 6: Final answer
    x = 5,699,885.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.