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Finding the Fourth Proportional to 571,915.32, 789,337.76 and 317,348.52

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Solution

The fourth proportional to 571,915.32, 789,337.76 and 317,348.52 is: 437,993.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,915.32 : 789,337.76 = 317,348.52 : x
  2. Step 2: Convert to fraction form
    571,915.32/789,337.76 = 317,348.52/x
  3. Step 3: Cross multiply
    571,915.32x = 789,337.76 × 317,348.52
  4. Step 4: Simplify right side
    571,915.32x = 250,495,168,329.37
  5. Step 5: Solve for x
    x = 250,495,168,329.37/571,915.32
  6. Step 6: Final answer
    x = 437,993.46

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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.