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Finding the Fourth Proportional to 448,569.60, 672,854.40 and 442,664.70

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Solution

The fourth proportional to 448,569.60, 672,854.40 and 442,664.70 is: 663,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,569.60 : 672,854.40 = 442,664.70 : x
  2. Step 2: Convert to fraction form
    448,569.60/672,854.40 = 442,664.70/x
  3. Step 3: Cross multiply
    448,569.60x = 672,854.40 × 442,664.70
  4. Step 4: Simplify right side
    448,569.60x = 297,848,891,119.68
  5. Step 5: Solve for x
    x = 297,848,891,119.68/448,569.60
  6. Step 6: Final answer
    x = 663,997.05

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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.