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Finding the Fourth Proportional to 571,915.82, 789,338.45 and 317,349.02

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Solution

The fourth proportional to 571,915.82, 789,338.45 and 317,349.02 is: 437,994.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,915.82 : 789,338.45 = 317,349.02 : x
  2. Step 2: Convert to fraction form
    571,915.82/789,338.45 = 317,349.02/x
  3. Step 3: Cross multiply
    571,915.82x = 789,338.45 × 317,349.02
  4. Step 4: Simplify right side
    571,915.82x = 250,495,783,555.82
  5. Step 5: Solve for x
    x = 250,495,783,555.82/571,915.82
  6. Step 6: Final answer
    x = 437,994.15

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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.