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Finding the Fourth Proportional to 647,318.58, 893,266.92 and 360,783.30

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Solution

The fourth proportional to 647,318.58, 893,266.92 and 360,783.30 is: 497,862.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,318.58 : 893,266.92 = 360,783.30 : x
  2. Step 2: Convert to fraction form
    647,318.58/893,266.92 = 360,783.30/x
  3. Step 3: Cross multiply
    647,318.58x = 893,266.92 × 360,783.30
  4. Step 4: Simplify right side
    647,318.58x = 322,275,787,178.44
  5. Step 5: Solve for x
    x = 322,275,787,178.44/647,318.58
  6. Step 6: Final answer
    x = 497,862.72

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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.