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Finding the Fourth Proportional to 598,620.70, 898,368.45 and 421,473.70

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Solution

The fourth proportional to 598,620.70, 898,368.45 and 421,473.70 is: 632,518.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,620.70 : 898,368.45 = 421,473.70 : x
  2. Step 2: Convert to fraction form
    598,620.70/898,368.45 = 421,473.70/x
  3. Step 3: Cross multiply
    598,620.70x = 898,368.45 × 421,473.70
  4. Step 4: Simplify right side
    598,620.70x = 378,638,674,584.77
  5. Step 5: Solve for x
    x = 378,638,674,584.77/598,620.70
  6. Step 6: Final answer
    x = 632,518.51

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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.