Home / 489,133.35-674,223.93-385,598.75

Finding the Fourth Proportional to 489,133.35, 674,223.93 and 385,598.75

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Solution

The fourth proportional to 489,133.35, 674,223.93 and 385,598.75 is: 531,511.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,133.35 : 674,223.93 = 385,598.75 : x
  2. Step 2: Convert to fraction form
    489,133.35/674,223.93 = 385,598.75/x
  3. Step 3: Cross multiply
    489,133.35x = 674,223.93 × 385,598.75
  4. Step 4: Simplify right side
    489,133.35x = 259,979,901,256.97
  5. Step 5: Solve for x
    x = 259,979,901,256.97/489,133.35
  6. Step 6: Final answer
    x = 531,511.30

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1.5x scale

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.