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Finding the Fourth Proportional to 611,491.20, 917,382.60 and 295,688.40

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Solution

The fourth proportional to 611,491.20, 917,382.60 and 295,688.40 is: 443,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,491.20 : 917,382.60 = 295,688.40 : x
  2. Step 2: Convert to fraction form
    611,491.20/917,382.60 = 295,688.40/x
  3. Step 3: Cross multiply
    611,491.20x = 917,382.60 × 295,688.40
  4. Step 4: Simplify right side
    611,491.20x = 271,259,393,181.84
  5. Step 5: Solve for x
    x = 271,259,393,181.84/611,491.20
  6. Step 6: Final answer
    x = 443,603.10

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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.