Home / 5,276,851.20-7,915,276.80-1,287,763.20

Finding the Fourth Proportional to 5,276,851.20, 7,915,276.80 and 1,287,763.20

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Solution

The fourth proportional to 5,276,851.20, 7,915,276.80 and 1,287,763.20 is: 1,931,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276,851.20 : 7,915,276.80 = 1,287,763.20 : x
  2. Step 2: Convert to fraction form
    5,276,851.20/7,915,276.80 = 1,287,763.20/x
  3. Step 3: Cross multiply
    5,276,851.20x = 7,915,276.80 × 1,287,763.20
  4. Step 4: Simplify right side
    5,276,851.20x = 10,193,002,180,853.76
  5. Step 5: Solve for x
    x = 10,193,002,180,853.76/5,276,851.20
  6. Step 6: Final answer
    x = 1,931,644.80

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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.