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Finding the Fourth Proportional to 548,620.70, 822,931.05 and 455,308.70

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Solution

The fourth proportional to 548,620.70, 822,931.05 and 455,308.70 is: 682,963.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,620.70 : 822,931.05 = 455,308.70 : x
  2. Step 2: Convert to fraction form
    548,620.70/822,931.05 = 455,308.70/x
  3. Step 3: Cross multiply
    548,620.70x = 822,931.05 × 455,308.70
  4. Step 4: Simplify right side
    548,620.70x = 374,687,666,565.14
  5. Step 5: Solve for x
    x = 374,687,666,565.14/548,620.70
  6. Step 6: Final answer
    x = 682,963.05

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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.