Home / 874,914.80-1,312,372.20-210,066.80

Finding the Fourth Proportional to 874,914.80, 1,312,372.20 and 210,066.80

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Solution

The fourth proportional to 874,914.80, 1,312,372.20 and 210,066.80 is: 315,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,914.80 : 1,312,372.20 = 210,066.80 : x
  2. Step 2: Convert to fraction form
    874,914.80/1,312,372.20 = 210,066.80/x
  3. Step 3: Cross multiply
    874,914.80x = 1,312,372.20 × 210,066.80
  4. Step 4: Simplify right side
    874,914.80x = 275,685,828,462.96
  5. Step 5: Solve for x
    x = 275,685,828,462.96/874,914.80
  6. Step 6: Final answer
    x = 315,100.20

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Double scale
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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.