Home / 839,972.80-1,259,959.20-828,913.60

Finding the Fourth Proportional to 839,972.80, 1,259,959.20 and 828,913.60

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Solution

The fourth proportional to 839,972.80, 1,259,959.20 and 828,913.60 is: 1,243,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,972.80 : 1,259,959.20 = 828,913.60 : x
  2. Step 2: Convert to fraction form
    839,972.80/1,259,959.20 = 828,913.60/x
  3. Step 3: Cross multiply
    839,972.80x = 1,259,959.20 × 828,913.60
  4. Step 4: Simplify right side
    839,972.80x = 1,044,397,316,325.12
  5. Step 5: Solve for x
    x = 1,044,397,316,325.12/839,972.80
  6. Step 6: Final answer
    x = 1,243,370.40

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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.