Home / 1,276,871.20-1,915,306.80-828,973.60

Finding the Fourth Proportional to 1,276,871.20, 1,915,306.80 and 828,973.60

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Solution

The fourth proportional to 1,276,871.20, 1,915,306.80 and 828,973.60 is: 1,243,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,871.20 : 1,915,306.80 = 828,973.60 : x
  2. Step 2: Convert to fraction form
    1,276,871.20/1,915,306.80 = 828,973.60/x
  3. Step 3: Cross multiply
    1,276,871.20x = 1,915,306.80 × 828,973.60
  4. Step 4: Simplify right side
    1,276,871.20x = 1,587,738,773,100.48
  5. Step 5: Solve for x
    x = 1,587,738,773,100.48/1,276,871.20
  6. Step 6: Final answer
    x = 1,243,460.40

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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.