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Finding the Fourth Proportional to 348,529.80, 522,794.70 and 345,905.40

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Solution

The fourth proportional to 348,529.80, 522,794.70 and 345,905.40 is: 518,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,529.80 : 522,794.70 = 345,905.40 : x
  2. Step 2: Convert to fraction form
    348,529.80/522,794.70 = 345,905.40/x
  3. Step 3: Cross multiply
    348,529.80x = 522,794.70 × 345,905.40
  4. Step 4: Simplify right side
    348,529.80x = 180,837,509,821.38
  5. Step 5: Solve for x
    x = 180,837,509,821.38/348,529.80
  6. Step 6: Final answer
    x = 518,858.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.