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Finding the Fourth Proportional to 918,668.82, 1,267,805.16 and 510,812.54

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Solution

The fourth proportional to 918,668.82, 1,267,805.16 and 510,812.54 is: 704,944.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,668.82 : 1,267,805.16 = 510,812.54 : x
  2. Step 2: Convert to fraction form
    918,668.82/1,267,805.16 = 510,812.54/x
  3. Step 3: Cross multiply
    918,668.82x = 1,267,805.16 × 510,812.54
  4. Step 4: Simplify right side
    918,668.82x = 647,610,774,004.71
  5. Step 5: Solve for x
    x = 647,610,774,004.71/918,668.82
  6. Step 6: Final answer
    x = 704,944.76

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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.