Home / 389,723.80-584,585.70-310,408.60

Finding the Fourth Proportional to 389,723.80, 584,585.70 and 310,408.60

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Solution

The fourth proportional to 389,723.80, 584,585.70 and 310,408.60 is: 465,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,723.80 : 584,585.70 = 310,408.60 : x
  2. Step 2: Convert to fraction form
    389,723.80/584,585.70 = 310,408.60/x
  3. Step 3: Cross multiply
    389,723.80x = 584,585.70 × 310,408.60
  4. Step 4: Simplify right side
    389,723.80x = 181,460,428,717.02
  5. Step 5: Solve for x
    x = 181,460,428,717.02/389,723.80
  6. Step 6: Final answer
    x = 465,612.90

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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.