Home / 724,998.75-1,000,514.21-398,316.03

Finding the Fourth Proportional to 724,998.75, 1,000,514.21 and 398,316.03

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Solution

The fourth proportional to 724,998.75, 1,000,514.21 and 398,316.03 is: 549,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,998.75 : 1,000,514.21 = 398,316.03 : x
  2. Step 2: Convert to fraction form
    724,998.75/1,000,514.21 = 398,316.03/x
  3. Step 3: Cross multiply
    724,998.75x = 1,000,514.21 × 398,316.03
  4. Step 4: Simplify right side
    724,998.75x = 398,520,846,094.21
  5. Step 5: Solve for x
    x = 398,520,846,094.21/724,998.75
  6. Step 6: Final answer
    x = 549,684.87

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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.