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Finding the Fourth Proportional to 470,298.98, 648,656.97 and 326,987.30

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Solution

The fourth proportional to 470,298.98, 648,656.97 and 326,987.30 is: 450,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,298.98 : 648,656.97 = 326,987.30 : x
  2. Step 2: Convert to fraction form
    470,298.98/648,656.97 = 326,987.30/x
  3. Step 3: Cross multiply
    470,298.98x = 648,656.97 × 326,987.30
  4. Step 4: Simplify right side
    470,298.98x = 212,102,591,246.48
  5. Step 5: Solve for x
    x = 212,102,591,246.48/470,298.98
  6. Step 6: Final answer
    x = 450,995.22

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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.