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Finding the Fourth Proportional to 637,552, 879,821.76 and 351,071.40

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Solution

The fourth proportional to 637,552, 879,821.76 and 351,071.40 is: 484,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,552 : 879,821.76 = 351,071.40 : x
  2. Step 2: Convert to fraction form
    637,552/879,821.76 = 351,071.40/x
  3. Step 3: Cross multiply
    637,552x = 879,821.76 × 351,071.40
  4. Step 4: Simplify right side
    637,552x = 308,880,259,233.22
  5. Step 5: Solve for x
    x = 308,880,259,233.22/637,552
  6. Step 6: Final answer
    x = 484,478.54

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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.