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Finding the Fourth Proportional to 550,216.80, 825,325.20 and 455,738.40

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Solution

The fourth proportional to 550,216.80, 825,325.20 and 455,738.40 is: 683,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,216.80 : 825,325.20 = 455,738.40 : x
  2. Step 2: Convert to fraction form
    550,216.80/825,325.20 = 455,738.40/x
  3. Step 3: Cross multiply
    550,216.80x = 825,325.20 × 455,738.40
  4. Step 4: Simplify right side
    550,216.80x = 376,132,386,127.68
  5. Step 5: Solve for x
    x = 376,132,386,127.68/550,216.80
  6. Step 6: Final answer
    x = 683,607.60

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1.5x scale

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.