Home / 1,383,516.84-1,909,255.85-771,709.23

Finding the Fourth Proportional to 1,383,516.84, 1,909,255.85 and 771,709.23

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Solution

The fourth proportional to 1,383,516.84, 1,909,255.85 and 771,709.23 is: 1,064,960.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,516.84 : 1,909,255.85 = 771,709.23 : x
  2. Step 2: Convert to fraction form
    1,383,516.84/1,909,255.85 = 771,709.23/x
  3. Step 3: Cross multiply
    1,383,516.84x = 1,909,255.85 × 771,709.23
  4. Step 4: Simplify right side
    1,383,516.84x = 1,473,390,361,876.50
  5. Step 5: Solve for x
    x = 1,473,390,361,876.50/1,383,516.84
  6. Step 6: Final answer
    x = 1,064,960.19

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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.