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Finding the Fourth Proportional to 911,924.12, 1,258,479.02 and 504,032.40

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Solution

The fourth proportional to 911,924.12, 1,258,479.02 and 504,032.40 is: 695,577.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,924.12 : 1,258,479.02 = 504,032.40 : x
  2. Step 2: Convert to fraction form
    911,924.12/1,258,479.02 = 504,032.40/x
  3. Step 3: Cross multiply
    911,924.12x = 1,258,479.02 × 504,032.40
  4. Step 4: Simplify right side
    911,924.12x = 634,314,200,800.25
  5. Step 5: Solve for x
    x = 634,314,200,800.25/911,924.12
  6. Step 6: Final answer
    x = 695,577.83

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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.