Home / 745,720.40-1,118,969.40-325,038.80

Finding the Fourth Proportional to 745,720.40, 1,118,969.40 and 325,038.80

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Solution

The fourth proportional to 745,720.40, 1,118,969.40 and 325,038.80 is: 487,727.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,720.40 : 1,118,969.40 = 325,038.80 : x
  2. Step 2: Convert to fraction form
    745,720.40/1,118,969.40 = 325,038.80/x
  3. Step 3: Cross multiply
    745,720.40x = 1,118,969.40 × 325,038.80
  4. Step 4: Simplify right side
    745,720.40x = 363,708,471,012.72
  5. Step 5: Solve for x
    x = 363,708,471,012.72/745,720.40
  6. Step 6: Final answer
    x = 487,727.67

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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.