Home / 853,654.93-1,280,621.36-398,701.11

Finding the Fourth Proportional to 853,654.93, 1,280,621.36 and 398,701.11

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Solution

The fourth proportional to 853,654.93, 1,280,621.36 and 398,701.11 is: 598,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,654.93 : 1,280,621.36 = 398,701.11 : x
  2. Step 2: Convert to fraction form
    853,654.93/1,280,621.36 = 398,701.11/x
  3. Step 3: Cross multiply
    853,654.93x = 1,280,621.36 × 398,701.11
  4. Step 4: Simplify right side
    853,654.93x = 510,585,163,520.79
  5. Step 5: Solve for x
    x = 510,585,163,520.79/853,654.93
  6. Step 6: Final answer
    x = 598,116.58

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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.