Home / 879,575.80-1,319,339.40-280,572.70

Finding the Fourth Proportional to 879,575.80, 1,319,339.40 and 280,572.70

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Solution

The fourth proportional to 879,575.80, 1,319,339.40 and 280,572.70 is: 420,851.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,575.80 : 1,319,339.40 = 280,572.70 : x
  2. Step 2: Convert to fraction form
    879,575.80/1,319,339.40 = 280,572.70/x
  3. Step 3: Cross multiply
    879,575.80x = 1,319,339.40 × 280,572.70
  4. Step 4: Simplify right side
    879,575.80x = 370,170,617,674.38
  5. Step 5: Solve for x
    x = 370,170,617,674.38/879,575.80
  6. Step 6: Final answer
    x = 420,851.30

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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.