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Finding the Fourth Proportional to 647,208.56, 893,148.78 and 360,722.49

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Solution

The fourth proportional to 647,208.56, 893,148.78 and 360,722.49 is: 497,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,208.56 : 893,148.78 = 360,722.49 : x
  2. Step 2: Convert to fraction form
    647,208.56/893,148.78 = 360,722.49/x
  3. Step 3: Cross multiply
    647,208.56x = 893,148.78 × 360,722.49
  4. Step 4: Simplify right side
    647,208.56x = 322,178,851,862.06
  5. Step 5: Solve for x
    x = 322,178,851,862.06/647,208.56
  6. Step 6: Final answer
    x = 497,797.58

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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.