Home / 990,564.60-1,485,846.90-280,583.40

Finding the Fourth Proportional to 990,564.60, 1,485,846.90 and 280,583.40

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Solution

The fourth proportional to 990,564.60, 1,485,846.90 and 280,583.40 is: 420,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,564.60 : 1,485,846.90 = 280,583.40 : x
  2. Step 2: Convert to fraction form
    990,564.60/1,485,846.90 = 280,583.40/x
  3. Step 3: Cross multiply
    990,564.60x = 1,485,846.90 × 280,583.40
  4. Step 4: Simplify right side
    990,564.60x = 416,903,975,081.46
  5. Step 5: Solve for x
    x = 416,903,975,081.46/990,564.60
  6. Step 6: Final answer
    x = 420,875.10

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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.