Home / 12,478,518.40-18,718,441.80-3,959,521.60

Finding the Fourth Proportional to 12,478,518.40, 18,718,441.80 and 3,959,521.60

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Solution

The fourth proportional to 12,478,518.40, 18,718,441.80 and 3,959,521.60 is: 5,939,493.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,518.40 : 18,718,441.80 = 3,959,521.60 : x
  2. Step 2: Convert to fraction form
    12,478,518.40/18,718,441.80 = 3,959,521.60/x
  3. Step 3: Cross multiply
    12,478,518.40x = 18,718,441.80 × 3,959,521.60
  4. Step 4: Simplify right side
    12,478,518.40x = 74,116,074,625,442.89
  5. Step 5: Solve for x
    x = 74,116,074,625,442.89/12,478,518.40
  6. Step 6: Final answer
    x = 5,939,493.16

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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.