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Finding the Fourth Proportional to 484,459.98, 668,483.70 and 290,826.62

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Solution

The fourth proportional to 484,459.98, 668,483.70 and 290,826.62 is: 401,298.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,459.98 : 668,483.70 = 290,826.62 : x
  2. Step 2: Convert to fraction form
    484,459.98/668,483.70 = 290,826.62/x
  3. Step 3: Cross multiply
    484,459.98x = 668,483.70 × 290,826.62
  4. Step 4: Simplify right side
    484,459.98x = 194,412,854,996.09
  5. Step 5: Solve for x
    x = 194,412,854,996.09/484,459.98
  6. Step 6: Final answer
    x = 401,298.07

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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.