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Finding the Fourth Proportional to 911,729.34, 1,258,181.68 and 503,859.51

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Solution

The fourth proportional to 911,729.34, 1,258,181.68 and 503,859.51 is: 695,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,729.34 : 1,258,181.68 = 503,859.51 : x
  2. Step 2: Convert to fraction form
    911,729.34/1,258,181.68 = 503,859.51/x
  3. Step 3: Cross multiply
    911,729.34x = 1,258,181.68 × 503,859.51
  4. Step 4: Simplify right side
    911,729.34x = 633,946,804,775.78
  5. Step 5: Solve for x
    x = 633,946,804,775.78/911,729.34
  6. Step 6: Final answer
    x = 695,323.47

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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.