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Finding the Fourth Proportional to 922,003.79, 1,272,333.79 and 508,556.95

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Solution

The fourth proportional to 922,003.79, 1,272,333.79 and 508,556.95 is: 701,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,003.79 : 1,272,333.79 = 508,556.95 : x
  2. Step 2: Convert to fraction form
    922,003.79/1,272,333.79 = 508,556.95/x
  3. Step 3: Cross multiply
    922,003.79x = 1,272,333.79 × 508,556.95
  4. Step 4: Simplify right side
    922,003.79x = 647,054,191,624.34
  5. Step 5: Solve for x
    x = 647,054,191,624.34/922,003.79
  6. Step 6: Final answer
    x = 701,791.25

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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.