Home / 389,110.80-583,666.20-310,378.80

Finding the Fourth Proportional to 389,110.80, 583,666.20 and 310,378.80

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Solution

The fourth proportional to 389,110.80, 583,666.20 and 310,378.80 is: 465,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,110.80 : 583,666.20 = 310,378.80 : x
  2. Step 2: Convert to fraction form
    389,110.80/583,666.20 = 310,378.80/x
  3. Step 3: Cross multiply
    389,110.80x = 583,666.20 × 310,378.80
  4. Step 4: Simplify right side
    389,110.80x = 181,157,614,756.56
  5. Step 5: Solve for x
    x = 181,157,614,756.56/389,110.80
  6. Step 6: Final answer
    x = 465,568.20

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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.