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Finding the Fourth Proportional to 651,234.79, 898,731.89 and 379,258.80

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Solution

The fourth proportional to 651,234.79, 898,731.89 and 379,258.80 is: 523,393.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,234.79 : 898,731.89 = 379,258.80 : x
  2. Step 2: Convert to fraction form
    651,234.79/898,731.89 = 379,258.80/x
  3. Step 3: Cross multiply
    651,234.79x = 898,731.89 × 379,258.80
  4. Step 4: Simplify right side
    651,234.79x = 340,851,971,733.18
  5. Step 5: Solve for x
    x = 340,851,971,733.18/651,234.79
  6. Step 6: Final answer
    x = 523,393.37

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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.