Home / 500,341.96-690,408.66-398,625.40

Finding the Fourth Proportional to 500,341.96, 690,408.66 and 398,625.40

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Solution

The fourth proportional to 500,341.96, 690,408.66 and 398,625.40 is: 550,052.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,341.96 : 690,408.66 = 398,625.40 : x
  2. Step 2: Convert to fraction form
    500,341.96/690,408.66 = 398,625.40/x
  3. Step 3: Cross multiply
    500,341.96x = 690,408.66 × 398,625.40
  4. Step 4: Simplify right side
    500,341.96x = 275,214,428,255.96
  5. Step 5: Solve for x
    x = 275,214,428,255.96/500,341.96
  6. Step 6: Final answer
    x = 550,052.66

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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.