Home / 879,055.96-1,318,782.80-280,051.24

Finding the Fourth Proportional to 879,055.96, 1,318,782.80 and 280,051.24

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Solution

The fourth proportional to 879,055.96, 1,318,782.80 and 280,051.24 is: 420,140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,055.96 : 1,318,782.80 = 280,051.24 : x
  2. Step 2: Convert to fraction form
    879,055.96/1,318,782.80 = 280,051.24/x
  3. Step 3: Cross multiply
    879,055.96x = 1,318,782.80 × 280,051.24
  4. Step 4: Simplify right side
    879,055.96x = 369,326,759,729.09
  5. Step 5: Solve for x
    x = 369,326,759,729.09/879,055.96
  6. Step 6: Final answer
    x = 420,140.21

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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.