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Finding the Fourth Proportional to 489,011.90, 732,533.70 and 329,579.60

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Solution

The fourth proportional to 489,011.90, 732,533.70 and 329,579.60 is: 493,706.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,011.90 : 732,533.70 = 329,579.60 : x
  2. Step 2: Convert to fraction form
    489,011.90/732,533.70 = 329,579.60/x
  3. Step 3: Cross multiply
    489,011.90x = 732,533.70 × 329,579.60
  4. Step 4: Simplify right side
    489,011.90x = 241,428,163,832.52
  5. Step 5: Solve for x
    x = 241,428,163,832.52/489,011.90
  6. Step 6: Final answer
    x = 493,706.11

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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.