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Finding the Fourth Proportional to 461,091, 636,830.46 and 309,925.56

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Solution

The fourth proportional to 461,091, 636,830.46 and 309,925.56 is: 428,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,091 : 636,830.46 = 309,925.56 : x
  2. Step 2: Convert to fraction form
    461,091/636,830.46 = 309,925.56/x
  3. Step 3: Cross multiply
    461,091x = 636,830.46 × 309,925.56
  4. Step 4: Simplify right side
    461,091x = 197,370,036,940.56
  5. Step 5: Solve for x
    x = 197,370,036,940.56/461,091
  6. Step 6: Final answer
    x = 428,050.07

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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.