Home / 1,428,432.21-1,971,266.58-783,846.78

Finding the Fourth Proportional to 1,428,432.21, 1,971,266.58 and 783,846.78

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Solution

The fourth proportional to 1,428,432.21, 1,971,266.58 and 783,846.78 is: 1,081,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,432.21 : 1,971,266.58 = 783,846.78 : x
  2. Step 2: Convert to fraction form
    1,428,432.21/1,971,266.58 = 783,846.78/x
  3. Step 3: Cross multiply
    1,428,432.21x = 1,971,266.58 × 783,846.78
  4. Step 4: Simplify right side
    1,428,432.21x = 1,545,170,961,254.61
  5. Step 5: Solve for x
    x = 1,545,170,961,254.61/1,428,432.21
  6. Step 6: Final answer
    x = 1,081,725.09

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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.