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Finding the Fourth Proportional to 640,299.68, 960,615.58 and 340,533.77

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Solution

The fourth proportional to 640,299.68, 960,615.58 and 340,533.77 is: 510,888.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,299.68 : 960,615.58 = 340,533.77 : x
  2. Step 2: Convert to fraction form
    640,299.68/960,615.58 = 340,533.77/x
  3. Step 3: Cross multiply
    640,299.68x = 960,615.58 × 340,533.77
  4. Step 4: Simplify right side
    640,299.68x = 327,122,046,528.34
  5. Step 5: Solve for x
    x = 327,122,046,528.34/640,299.68
  6. Step 6: Final answer
    x = 510,888.97

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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.