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Finding the Fourth Proportional to 608,714.88, 911,740.80 and 308,678.40

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Solution

The fourth proportional to 608,714.88, 911,740.80 and 308,678.40 is: 462,342.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,714.88 : 911,740.80 = 308,678.40 : x
  2. Step 2: Convert to fraction form
    608,714.88/911,740.80 = 308,678.40/x
  3. Step 3: Cross multiply
    608,714.88x = 911,740.80 × 308,678.40
  4. Step 4: Simplify right side
    608,714.88x = 281,434,691,358.72
  5. Step 5: Solve for x
    x = 281,434,691,358.72/608,714.88
  6. Step 6: Final answer
    x = 462,342.39

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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.