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Finding the Fourth Proportional to 405,013.80, 607,520.70 and 370,896.60

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Solution

The fourth proportional to 405,013.80, 607,520.70 and 370,896.60 is: 556,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,013.80 : 607,520.70 = 370,896.60 : x
  2. Step 2: Convert to fraction form
    405,013.80/607,520.70 = 370,896.60/x
  3. Step 3: Cross multiply
    405,013.80x = 607,520.70 × 370,896.60
  4. Step 4: Simplify right side
    405,013.80x = 225,327,362,059.62
  5. Step 5: Solve for x
    x = 225,327,362,059.62/405,013.80
  6. Step 6: Final answer
    x = 556,344.90

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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.