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Finding the Fourth Proportional to 628,442.88, 867,237 and 341,963.76

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Solution

The fourth proportional to 628,442.88, 867,237 and 341,963.76 is: 471,902.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,442.88 : 867,237 = 341,963.76 : x
  2. Step 2: Convert to fraction form
    628,442.88/867,237 = 341,963.76/x
  3. Step 3: Cross multiply
    628,442.88x = 867,237 × 341,963.76
  4. Step 4: Simplify right side
    628,442.88x = 296,563,625,331.12
  5. Step 5: Solve for x
    x = 296,563,625,331.12/628,442.88
  6. Step 6: Final answer
    x = 471,902.28

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1.5x scale

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.