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Finding the Fourth Proportional to 646,435.17, 969,328.31 and 376,650.50

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Solution

The fourth proportional to 646,435.17, 969,328.31 and 376,650.50 is: 564,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,435.17 : 969,328.31 = 376,650.50 : x
  2. Step 2: Convert to fraction form
    646,435.17/969,328.31 = 376,650.50/x
  3. Step 3: Cross multiply
    646,435.17x = 969,328.31 × 376,650.50
  4. Step 4: Simplify right side
    646,435.17x = 365,097,985,895.76
  5. Step 5: Solve for x
    x = 365,097,985,895.76/646,435.17
  6. Step 6: Final answer
    x = 564,786.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.