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Finding the Fourth Proportional to 647,722.09, 893,900.33 and 375,790.11

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Solution

The fourth proportional to 647,722.09, 893,900.33 and 375,790.11 is: 518,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,722.09 : 893,900.33 = 375,790.11 : x
  2. Step 2: Convert to fraction form
    647,722.09/893,900.33 = 375,790.11/x
  3. Step 3: Cross multiply
    647,722.09x = 893,900.33 × 375,790.11
  4. Step 4: Simplify right side
    647,722.09x = 335,918,903,339.74
  5. Step 5: Solve for x
    x = 335,918,903,339.74/647,722.09
  6. Step 6: Final answer
    x = 518,615.79

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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.