Home / 990,989.84-1,486,164.92-280,827.20

Finding the Fourth Proportional to 990,989.84, 1,486,164.92 and 280,827.20

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Solution

The fourth proportional to 990,989.84, 1,486,164.92 and 280,827.20 is: 421,150.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,989.84 : 1,486,164.92 = 280,827.20 : x
  2. Step 2: Convert to fraction form
    990,989.84/1,486,164.92 = 280,827.20/x
  3. Step 3: Cross multiply
    990,989.84x = 1,486,164.92 × 280,827.20
  4. Step 4: Simplify right side
    990,989.84x = 417,355,535,533.10
  5. Step 5: Solve for x
    x = 417,355,535,533.10/990,989.84
  6. Step 6: Final answer
    x = 421,150.16

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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.