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Finding the Fourth Proportional to 636,461.72, 878,339.72 and 350,003.60

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Solution

The fourth proportional to 636,461.72, 878,339.72 and 350,003.60 is: 483,017.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,461.72 : 878,339.72 = 350,003.60 : x
  2. Step 2: Convert to fraction form
    636,461.72/878,339.72 = 350,003.60/x
  3. Step 3: Cross multiply
    636,461.72x = 878,339.72 × 350,003.60
  4. Step 4: Simplify right side
    636,461.72x = 307,422,064,022.99
  5. Step 5: Solve for x
    x = 307,422,064,022.99/636,461.72
  6. Step 6: Final answer
    x = 483,017.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.