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Finding the Fourth Proportional to 806,674.80, 1,210,012.20 and 771,245.40

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Solution

The fourth proportional to 806,674.80, 1,210,012.20 and 771,245.40 is: 1,156,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,674.80 : 1,210,012.20 = 771,245.40 : x
  2. Step 2: Convert to fraction form
    806,674.80/1,210,012.20 = 771,245.40/x
  3. Step 3: Cross multiply
    806,674.80x = 1,210,012.20 × 771,245.40
  4. Step 4: Simplify right side
    806,674.80x = 933,216,343,193.88
  5. Step 5: Solve for x
    x = 933,216,343,193.88/806,674.80
  6. Step 6: Final answer
    x = 1,156,868.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.