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Finding the Fourth Proportional to 449,510.40, 620,697.60 and 299,289.60

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Solution

The fourth proportional to 449,510.40, 620,697.60 and 299,289.60 is: 413,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,510.40 : 620,697.60 = 299,289.60 : x
  2. Step 2: Convert to fraction form
    449,510.40/620,697.60 = 299,289.60/x
  3. Step 3: Cross multiply
    449,510.40x = 620,697.60 × 299,289.60
  4. Step 4: Simplify right side
    449,510.40x = 185,768,336,424.96
  5. Step 5: Solve for x
    x = 185,768,336,424.96/449,510.40
  6. Step 6: Final answer
    x = 413,268.16

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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.