Home / 1,095,843.84-1,512,289.28-643,461.12

Finding the Fourth Proportional to 1,095,843.84, 1,512,289.28 and 643,461.12

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Solution

The fourth proportional to 1,095,843.84, 1,512,289.28 and 643,461.12 is: 887,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095,843.84 : 1,512,289.28 = 643,461.12 : x
  2. Step 2: Convert to fraction form
    1,095,843.84/1,512,289.28 = 643,461.12/x
  3. Step 3: Cross multiply
    1,095,843.84x = 1,512,289.28 × 643,461.12
  4. Step 4: Simplify right side
    1,095,843.84x = 973,099,353,872.79
  5. Step 5: Solve for x
    x = 973,099,353,872.79/1,095,843.84
  6. Step 6: Final answer
    x = 887,990.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.