Home / 1,383,515.84-1,909,254.47-771,708.23

Finding the Fourth Proportional to 1,383,515.84, 1,909,254.47 and 771,708.23

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Solution

The fourth proportional to 1,383,515.84, 1,909,254.47 and 771,708.23 is: 1,064,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,515.84 : 1,909,254.47 = 771,708.23 : x
  2. Step 2: Convert to fraction form
    1,383,515.84/1,909,254.47 = 771,708.23/x
  3. Step 3: Cross multiply
    1,383,515.84x = 1,909,254.47 × 771,708.23
  4. Step 4: Simplify right side
    1,383,515.84x = 1,473,387,385,759.04
  5. Step 5: Solve for x
    x = 1,473,387,385,759.04/1,383,515.84
  6. Step 6: Final answer
    x = 1,064,958.81

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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.