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Finding the Fourth Proportional to 670,348.40, 925,280.22 and 384,059.12

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Solution

The fourth proportional to 670,348.40, 925,280.22 and 384,059.12 is: 530,115.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,348.40 : 925,280.22 = 384,059.12 : x
  2. Step 2: Convert to fraction form
    670,348.40/925,280.22 = 384,059.12/x
  3. Step 3: Cross multiply
    670,348.40x = 925,280.22 × 384,059.12
  4. Step 4: Simplify right side
    670,348.40x = 355,362,307,046.61
  5. Step 5: Solve for x
    x = 355,362,307,046.61/670,348.40
  6. Step 6: Final answer
    x = 530,115.84

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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.