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Finding the Fourth Proportional to 703,617, 1,055,425.50 and 309,633

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Solution

The fourth proportional to 703,617, 1,055,425.50 and 309,633 is: 464,449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,617 : 1,055,425.50 = 309,633 : x
  2. Step 2: Convert to fraction form
    703,617/1,055,425.50 = 309,633/x
  3. Step 3: Cross multiply
    703,617x = 1,055,425.50 × 309,633
  4. Step 4: Simplify right side
    703,617x = 326,794,563,841.50
  5. Step 5: Solve for x
    x = 326,794,563,841.50/703,617
  6. Step 6: Final answer
    x = 464,449.50

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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.