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Finding the Fourth Proportional to 449,704.19, 620,298.92 and 288,303.59

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Solution

The fourth proportional to 449,704.19, 620,298.92 and 288,303.59 is: 397,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,704.19 : 620,298.92 = 288,303.59 : x
  2. Step 2: Convert to fraction form
    449,704.19/620,298.92 = 288,303.59/x
  3. Step 3: Cross multiply
    449,704.19x = 620,298.92 × 288,303.59
  4. Step 4: Simplify right side
    449,704.19x = 178,834,403,128.39
  5. Step 5: Solve for x
    x = 178,834,403,128.39/449,704.19
  6. Step 6: Final answer
    x = 397,671.20

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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.