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Finding the Fourth Proportional to 823,903.80, 1,235,855.70 and 470,009.40

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Solution

The fourth proportional to 823,903.80, 1,235,855.70 and 470,009.40 is: 705,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,903.80 : 1,235,855.70 = 470,009.40 : x
  2. Step 2: Convert to fraction form
    823,903.80/1,235,855.70 = 470,009.40/x
  3. Step 3: Cross multiply
    823,903.80x = 1,235,855.70 × 470,009.40
  4. Step 4: Simplify right side
    823,903.80x = 580,863,796,043.58
  5. Step 5: Solve for x
    x = 580,863,796,043.58/823,903.80
  6. Step 6: Final answer
    x = 705,014.10

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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.