Home / 879,464.40-1,319,196.60-280,420.80

Finding the Fourth Proportional to 879,464.40, 1,319,196.60 and 280,420.80

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Solution

The fourth proportional to 879,464.40, 1,319,196.60 and 280,420.80 is: 420,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,464.40 : 1,319,196.60 = 280,420.80 : x
  2. Step 2: Convert to fraction form
    879,464.40/1,319,196.60 = 280,420.80/x
  3. Step 3: Cross multiply
    879,464.40x = 1,319,196.60 × 280,420.80
  4. Step 4: Simplify right side
    879,464.40x = 369,930,165,929.28
  5. Step 5: Solve for x
    x = 369,930,165,929.28/879,464.40
  6. Step 6: Final answer
    x = 420,631.20

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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.