Home / 911,486.61-1,258,205.88-815,827.23

Finding the Fourth Proportional to 911,486.61, 1,258,205.88 and 815,827.23

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Solution

The fourth proportional to 911,486.61, 1,258,205.88 and 815,827.23 is: 1,126,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,486.61 : 1,258,205.88 = 815,827.23 : x
  2. Step 2: Convert to fraction form
    911,486.61/1,258,205.88 = 815,827.23/x
  3. Step 3: Cross multiply
    911,486.61x = 1,258,205.88 × 815,827.23
  4. Step 4: Simplify right side
    911,486.61x = 1,026,478,617,850.11
  5. Step 5: Solve for x
    x = 1,026,478,617,850.11/911,486.61
  6. Step 6: Final answer
    x = 1,126,158.75

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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.