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Finding the Fourth Proportional to 628,838.10, 865,874.60 and 474,014.30

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Solution

The fourth proportional to 628,838.10, 865,874.60 and 474,014.30 is: 652,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,838.10 : 865,874.60 = 474,014.30 : x
  2. Step 2: Convert to fraction form
    628,838.10/865,874.60 = 474,014.30/x
  3. Step 3: Cross multiply
    628,838.10x = 865,874.60 × 474,014.30
  4. Step 4: Simplify right side
    628,838.10x = 410,436,942,406.78
  5. Step 5: Solve for x
    x = 410,436,942,406.78/628,838.10
  6. Step 6: Final answer
    x = 652,690.96

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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.