Home / 673,769.40-1,010,654.10-393,142.20

Finding the Fourth Proportional to 673,769.40, 1,010,654.10 and 393,142.20

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Solution

The fourth proportional to 673,769.40, 1,010,654.10 and 393,142.20 is: 589,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,769.40 : 1,010,654.10 = 393,142.20 : x
  2. Step 2: Convert to fraction form
    673,769.40/1,010,654.10 = 393,142.20/x
  3. Step 3: Cross multiply
    673,769.40x = 1,010,654.10 × 393,142.20
  4. Step 4: Simplify right side
    673,769.40x = 397,330,776,313.02
  5. Step 5: Solve for x
    x = 397,330,776,313.02/673,769.40
  6. Step 6: Final answer
    x = 589,713.30

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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.