Home / 673,971.10-930,200.25-398,317.69

Finding the Fourth Proportional to 673,971.10, 930,200.25 and 398,317.69

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Solution

The fourth proportional to 673,971.10, 930,200.25 and 398,317.69 is: 549,749.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,971.10 : 930,200.25 = 398,317.69 : x
  2. Step 2: Convert to fraction form
    673,971.10/930,200.25 = 398,317.69/x
  3. Step 3: Cross multiply
    673,971.10x = 930,200.25 × 398,317.69
  4. Step 4: Simplify right side
    673,971.10x = 370,515,212,825.83
  5. Step 5: Solve for x
    x = 370,515,212,825.83/673,971.10
  6. Step 6: Final answer
    x = 549,749.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.