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Finding the Fourth Proportional to 425,219.54, 637,830.18 and 399,237.98

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Solution

The fourth proportional to 425,219.54, 637,830.18 and 399,237.98 is: 598,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,219.54 : 637,830.18 = 399,237.98 : x
  2. Step 2: Convert to fraction form
    425,219.54/637,830.18 = 399,237.98/x
  3. Step 3: Cross multiply
    425,219.54x = 637,830.18 × 399,237.98
  4. Step 4: Simplify right side
    425,219.54x = 254,646,029,457.09
  5. Step 5: Solve for x
    x = 254,646,029,457.09/425,219.54
  6. Step 6: Final answer
    x = 598,857.79

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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.