Home / 7,908,678.78-11,862,907.38-3,116,409.72

Finding the Fourth Proportional to 7,908,678.78, 11,862,907.38 and 3,116,409.72

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Solution

The fourth proportional to 7,908,678.78, 11,862,907.38 and 3,116,409.72 is: 4,674,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908,678.78 : 11,862,907.38 = 3,116,409.72 : x
  2. Step 2: Convert to fraction form
    7,908,678.78/11,862,907.38 = 3,116,409.72/x
  3. Step 3: Cross multiply
    7,908,678.78x = 11,862,907.38 × 3,116,409.72
  4. Step 4: Simplify right side
    7,908,678.78x = 36,969,679,866,491.74
  5. Step 5: Solve for x
    x = 36,969,679,866,491.74/7,908,678.78
  6. Step 6: Final answer
    x = 4,674,570.92

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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.