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Finding the Fourth Proportional to 645,647.40, 968,033.70 and 329,844.60

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Solution

The fourth proportional to 645,647.40, 968,033.70 and 329,844.60 is: 494,543.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,647.40 : 968,033.70 = 329,844.60 : x
  2. Step 2: Convert to fraction form
    645,647.40/968,033.70 = 329,844.60/x
  3. Step 3: Cross multiply
    645,647.40x = 968,033.70 × 329,844.60
  4. Step 4: Simplify right side
    645,647.40x = 319,300,688,563.02
  5. Step 5: Solve for x
    x = 319,300,688,563.02/645,647.40
  6. Step 6: Final answer
    x = 494,543.44

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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.