Home / 12,497,619.20-18,746,428.80-3,978,816.80

Finding the Fourth Proportional to 12,497,619.20, 18,746,428.80 and 3,978,816.80

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Solution

The fourth proportional to 12,497,619.20, 18,746,428.80 and 3,978,816.80 is: 5,968,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,497,619.20 : 18,746,428.80 = 3,978,816.80 : x
  2. Step 2: Convert to fraction form
    12,497,619.20/18,746,428.80 = 3,978,816.80/x
  3. Step 3: Cross multiply
    12,497,619.20x = 18,746,428.80 × 3,978,816.80
  4. Step 4: Simplify right side
    12,497,619.20x = 74,588,605,849,443.84
  5. Step 5: Solve for x
    x = 74,588,605,849,443.84/12,497,619.20
  6. Step 6: Final answer
    x = 5,968,225.20

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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.