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Finding the Fourth Proportional to 651,470.56, 898,656.70 and 379,509.80

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Solution

The fourth proportional to 651,470.56, 898,656.70 and 379,509.80 is: 523,506.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,470.56 : 898,656.70 = 379,509.80 : x
  2. Step 2: Convert to fraction form
    651,470.56/898,656.70 = 379,509.80/x
  3. Step 3: Cross multiply
    651,470.56x = 898,656.70 × 379,509.80
  4. Step 4: Simplify right side
    651,470.56x = 341,049,024,485.66
  5. Step 5: Solve for x
    x = 341,049,024,485.66/651,470.56
  6. Step 6: Final answer
    x = 523,506.43

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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.