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Finding the Fourth Proportional to 862,888.80, 1,293,361.20 and 413,824.80

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Solution

The fourth proportional to 862,888.80, 1,293,361.20 and 413,824.80 is: 620,271.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,888.80 : 1,293,361.20 = 413,824.80 : x
  2. Step 2: Convert to fraction form
    862,888.80/1,293,361.20 = 413,824.80/x
  3. Step 3: Cross multiply
    862,888.80x = 1,293,361.20 × 413,824.80
  4. Step 4: Simplify right side
    862,888.80x = 535,224,939,917.76
  5. Step 5: Solve for x
    x = 535,224,939,917.76/862,888.80
  6. Step 6: Final answer
    x = 620,271.05

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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.