Home / 879,804.39-1,319,729.52-280,764.75

Finding the Fourth Proportional to 879,804.39, 1,319,729.52 and 280,764.75

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Solution

The fourth proportional to 879,804.39, 1,319,729.52 and 280,764.75 is: 421,154.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,804.39 : 1,319,729.52 = 280,764.75 : x
  2. Step 2: Convert to fraction form
    879,804.39/1,319,729.52 = 280,764.75/x
  3. Step 3: Cross multiply
    879,804.39x = 1,319,729.52 × 280,764.75
  4. Step 4: Simplify right side
    879,804.39x = 370,533,528,750.42
  5. Step 5: Solve for x
    x = 370,533,528,750.42/879,804.39
  6. Step 6: Final answer
    x = 421,154.44

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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.