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Finding the Fourth Proportional to 647,289.21, 893,240.52 and 360,803.15

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Solution

The fourth proportional to 647,289.21, 893,240.52 and 360,803.15 is: 497,897.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,289.21 : 893,240.52 = 360,803.15 : x
  2. Step 2: Convert to fraction form
    647,289.21/893,240.52 = 360,803.15/x
  3. Step 3: Cross multiply
    647,289.21x = 893,240.52 × 360,803.15
  4. Step 4: Simplify right side
    647,289.21x = 322,283,993,323.64
  5. Step 5: Solve for x
    x = 322,283,993,323.64/647,289.21
  6. Step 6: Final answer
    x = 497,897.98

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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.