Home / 489,219.18-674,835.75-307,643.10

Finding the Fourth Proportional to 489,219.18, 674,835.75 and 307,643.10

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Solution

The fourth proportional to 489,219.18, 674,835.75 and 307,643.10 is: 424,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,219.18 : 674,835.75 = 307,643.10 : x
  2. Step 2: Convert to fraction form
    489,219.18/674,835.75 = 307,643.10/x
  3. Step 3: Cross multiply
    489,219.18x = 674,835.75 × 307,643.10
  4. Step 4: Simplify right side
    489,219.18x = 207,608,562,120.83
  5. Step 5: Solve for x
    x = 207,608,562,120.83/489,219.18
  6. Step 6: Final answer
    x = 424,367.18

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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.