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Finding the Fourth Proportional to 685,750.66, 946,329.69 and 383,949.70

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Solution

The fourth proportional to 685,750.66, 946,329.69 and 383,949.70 is: 529,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,750.66 : 946,329.69 = 383,949.70 : x
  2. Step 2: Convert to fraction form
    685,750.66/946,329.69 = 383,949.70/x
  3. Step 3: Cross multiply
    685,750.66x = 946,329.69 × 383,949.70
  4. Step 4: Simplify right side
    685,750.66x = 363,343,000,576.59
  5. Step 5: Solve for x
    x = 363,343,000,576.59/685,750.66
  6. Step 6: Final answer
    x = 529,847.10

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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.