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Finding the Fourth Proportional to 860,199, 1,281,964.35 and 815,409.24

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Solution

The fourth proportional to 860,199, 1,281,964.35 and 815,409.24 is: 1,215,213.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,199 : 1,281,964.35 = 815,409.24 : x
  2. Step 2: Convert to fraction form
    860,199/1,281,964.35 = 815,409.24/x
  3. Step 3: Cross multiply
    860,199x = 1,281,964.35 × 815,409.24
  4. Step 4: Simplify right side
    860,199x = 1,045,325,576,340.59
  5. Step 5: Solve for x
    x = 1,045,325,576,340.59/860,199
  6. Step 6: Final answer
    x = 1,215,213.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.