Home / 920,940.93-1,270,879.34-513,042.21

Finding the Fourth Proportional to 920,940.93, 1,270,879.34 and 513,042.21

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Solution

The fourth proportional to 920,940.93, 1,270,879.34 and 513,042.21 is: 707,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,940.93 : 1,270,879.34 = 513,042.21 : x
  2. Step 2: Convert to fraction form
    920,940.93/1,270,879.34 = 513,042.21/x
  3. Step 3: Cross multiply
    920,940.93x = 1,270,879.34 × 513,042.21
  4. Step 4: Simplify right side
    920,940.93x = 652,014,742,671.73
  5. Step 5: Solve for x
    x = 652,014,742,671.73/920,940.93
  6. Step 6: Final answer
    x = 707,987.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.