Home / 685,471.53-1,028,384.70-401,402.10

Finding the Fourth Proportional to 685,471.53, 1,028,384.70 and 401,402.10

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Solution

The fourth proportional to 685,471.53, 1,028,384.70 and 401,402.10 is: 602,207.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,471.53 : 1,028,384.70 = 401,402.10 : x
  2. Step 2: Convert to fraction form
    685,471.53/1,028,384.70 = 401,402.10/x
  3. Step 3: Cross multiply
    685,471.53x = 1,028,384.70 × 401,402.10
  4. Step 4: Simplify right side
    685,471.53x = 412,795,778,187.87
  5. Step 5: Solve for x
    x = 412,795,778,187.87/685,471.53
  6. Step 6: Final answer
    x = 602,207.04

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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.