Home / 389,190.84-532,464.52-387,510.48

Finding the Fourth Proportional to 389,190.84, 532,464.52 and 387,510.48

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Solution

The fourth proportional to 389,190.84, 532,464.52 and 387,510.48 is: 530,165.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,190.84 : 532,464.52 = 387,510.48 : x
  2. Step 2: Convert to fraction form
    389,190.84/532,464.52 = 387,510.48/x
  3. Step 3: Cross multiply
    389,190.84x = 532,464.52 × 387,510.48
  4. Step 4: Simplify right side
    389,190.84x = 206,335,581,728.17
  5. Step 5: Solve for x
    x = 206,335,581,728.17/389,190.84
  6. Step 6: Final answer
    x = 530,165.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.