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Finding the Fourth Proportional to 647,217.80, 893,164.74 and 360,756.08

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Solution

The fourth proportional to 647,217.80, 893,164.74 and 360,756.08 is: 497,845.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,217.80 : 893,164.74 = 360,756.08 : x
  2. Step 2: Convert to fraction form
    647,217.80/893,164.74 = 360,756.08/x
  3. Step 3: Cross multiply
    647,217.80x = 893,164.74 × 360,756.08
  4. Step 4: Simplify right side
    647,217.80x = 322,214,610,396.62
  5. Step 5: Solve for x
    x = 322,214,610,396.62/647,217.80
  6. Step 6: Final answer
    x = 497,845.72

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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.