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Finding the Fourth Proportional to 651,211.50, 898,674.63 and 379,465.83

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Solution

The fourth proportional to 651,211.50, 898,674.63 and 379,465.83 is: 523,664.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,211.50 : 898,674.63 = 379,465.83 : x
  2. Step 2: Convert to fraction form
    651,211.50/898,674.63 = 379,465.83/x
  3. Step 3: Cross multiply
    651,211.50x = 898,674.63 × 379,465.83
  4. Step 4: Simplify right side
    651,211.50x = 341,016,314,372.89
  5. Step 5: Solve for x
    x = 341,016,314,372.89/651,211.50
  6. Step 6: Final answer
    x = 523,664.45

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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.