Home / 1,326,019.20-1,989,028.80-822,134.40

Finding the Fourth Proportional to 1,326,019.20, 1,989,028.80 and 822,134.40

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Solution

The fourth proportional to 1,326,019.20, 1,989,028.80 and 822,134.40 is: 1,233,201.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,019.20 : 1,989,028.80 = 822,134.40 : x
  2. Step 2: Convert to fraction form
    1,326,019.20/1,989,028.80 = 822,134.40/x
  3. Step 3: Cross multiply
    1,326,019.20x = 1,989,028.80 × 822,134.40
  4. Step 4: Simplify right side
    1,326,019.20x = 1,635,248,999,070.72
  5. Step 5: Solve for x
    x = 1,635,248,999,070.72/1,326,019.20
  6. Step 6: Final answer
    x = 1,233,201.60

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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.