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Finding the Fourth Proportional to 524,254.80, 722,991.54 and 388,626.60

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Solution

The fourth proportional to 524,254.80, 722,991.54 and 388,626.60 is: 535,948.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,254.80 : 722,991.54 = 388,626.60 : x
  2. Step 2: Convert to fraction form
    524,254.80/722,991.54 = 388,626.60/x
  3. Step 3: Cross multiply
    524,254.80x = 722,991.54 × 388,626.60
  4. Step 4: Simplify right side
    524,254.80x = 280,973,744,018.96
  5. Step 5: Solve for x
    x = 280,973,744,018.96/524,254.80
  6. Step 6: Final answer
    x = 535,948.82

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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.