Home / 598,868.20-898,739.70-421,721.20

Finding the Fourth Proportional to 598,868.20, 898,739.70 and 421,721.20

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Solution

The fourth proportional to 598,868.20, 898,739.70 and 421,721.20 is: 632,889.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,868.20 : 898,739.70 = 421,721.20 : x
  2. Step 2: Convert to fraction form
    598,868.20/898,739.70 = 421,721.20/x
  3. Step 3: Cross multiply
    598,868.20x = 898,739.70 × 421,721.20
  4. Step 4: Simplify right side
    598,868.20x = 379,017,584,771.64
  5. Step 5: Solve for x
    x = 379,017,584,771.64/598,868.20
  6. Step 6: Final answer
    x = 632,889.82

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1.5x scale

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.