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Finding the Third Proportional to 310,004 and 438,776

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Solution

The third proportional to 310,004 and 438,776 is: 621,038.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,004 : 438,776 = 438,776 : x
  2. Step 2: Convert to fraction form
    310,004/438,776 = 438,776/x
  3. Step 3: Cross multiply
    310,004x = 438,776 × 438,776
  4. Step 4: Simplify right side
    310,004x = 192,524,378,176
  5. Step 5: Solve for x
    x = 192,524,378,176/310,004
  6. Step 6: Final answer
    x = 621,038.37

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.