Home / 548,638.17-755,438.38-480,272.55

Finding the Fourth Proportional to 548,638.17, 755,438.38 and 480,272.55

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Solution

The fourth proportional to 548,638.17, 755,438.38 and 480,272.55 is: 661,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,638.17 : 755,438.38 = 480,272.55 : x
  2. Step 2: Convert to fraction form
    548,638.17/755,438.38 = 480,272.55/x
  3. Step 3: Cross multiply
    548,638.17x = 755,438.38 × 480,272.55
  4. Step 4: Simplify right side
    548,638.17x = 362,816,317,130.47
  5. Step 5: Solve for x
    x = 362,816,317,130.47/548,638.17
  6. Step 6: Final answer
    x = 661,303.45

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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.