Home / 911,999.64-1,368,146.46-280,913.16

Finding the Fourth Proportional to 911,999.64, 1,368,146.46 and 280,913.16

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Solution

The fourth proportional to 911,999.64, 1,368,146.46 and 280,913.16 is: 421,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,999.64 : 1,368,146.46 = 280,913.16 : x
  2. Step 2: Convert to fraction form
    911,999.64/1,368,146.46 = 280,913.16/x
  3. Step 3: Cross multiply
    911,999.64x = 1,368,146.46 × 280,913.16
  4. Step 4: Simplify right side
    911,999.64x = 384,330,345,421.41
  5. Step 5: Solve for x
    x = 384,330,345,421.41/911,999.64
  6. Step 6: Final answer
    x = 421,415.02

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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.