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Finding the Fourth Proportional to 807,673.80, 1,211,510.70 and 492,745.80

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Solution

The fourth proportional to 807,673.80, 1,211,510.70 and 492,745.80 is: 739,118.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,673.80 : 1,211,510.70 = 492,745.80 : x
  2. Step 2: Convert to fraction form
    807,673.80/1,211,510.70 = 492,745.80/x
  3. Step 3: Cross multiply
    807,673.80x = 1,211,510.70 × 492,745.80
  4. Step 4: Simplify right side
    807,673.80x = 596,966,809,080.06
  5. Step 5: Solve for x
    x = 596,966,809,080.06/807,673.80
  6. Step 6: Final answer
    x = 739,118.70

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Similar ratio
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1.5x scale

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.