Home / 990,460.80-1,485,518.40-359,049.60

Finding the Fourth Proportional to 990,460.80, 1,485,518.40 and 359,049.60

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Solution

The fourth proportional to 990,460.80, 1,485,518.40 and 359,049.60 is: 538,511.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,460.80 : 1,485,518.40 = 359,049.60 : x
  2. Step 2: Convert to fraction form
    990,460.80/1,485,518.40 = 359,049.60/x
  3. Step 3: Cross multiply
    990,460.80x = 1,485,518.40 × 359,049.60
  4. Step 4: Simplify right side
    990,460.80x = 533,374,787,312.64
  5. Step 5: Solve for x
    x = 533,374,787,312.64/990,460.80
  6. Step 6: Final answer
    x = 538,511.76

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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.