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Finding the Fourth Proportional to 645,107.96, 967,359.54 and 345,533.24

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Solution

The fourth proportional to 645,107.96, 967,359.54 and 345,533.24 is: 518,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,107.96 : 967,359.54 = 345,533.24 : x
  2. Step 2: Convert to fraction form
    645,107.96/967,359.54 = 345,533.24/x
  3. Step 3: Cross multiply
    645,107.96x = 967,359.54 × 345,533.24
  4. Step 4: Simplify right side
    645,107.96x = 334,254,876,101.11
  5. Step 5: Solve for x
    x = 334,254,876,101.11/645,107.96
  6. Step 6: Final answer
    x = 518,137.89

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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.