Home / 691,982.40-1,038,556.80-313,485.60

Finding the Fourth Proportional to 691,982.40, 1,038,556.80 and 313,485.60

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Solution

The fourth proportional to 691,982.40, 1,038,556.80 and 313,485.60 is: 470,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,982.40 : 1,038,556.80 = 313,485.60 : x
  2. Step 2: Convert to fraction form
    691,982.40/1,038,556.80 = 313,485.60/x
  3. Step 3: Cross multiply
    691,982.40x = 1,038,556.80 × 313,485.60
  4. Step 4: Simplify right side
    691,982.40x = 325,572,601,582.08
  5. Step 5: Solve for x
    x = 325,572,601,582.08/691,982.40
  6. Step 6: Final answer
    x = 470,492.60

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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.