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Finding the Fourth Proportional to 638,648.14, 881,327.98 and 348,259

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Solution

The fourth proportional to 638,648.14, 881,327.98 and 348,259 is: 480,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,648.14 : 881,327.98 = 348,259 : x
  2. Step 2: Convert to fraction form
    638,648.14/881,327.98 = 348,259/x
  3. Step 3: Cross multiply
    638,648.14x = 881,327.98 × 348,259
  4. Step 4: Simplify right side
    638,648.14x = 306,930,400,986.82
  5. Step 5: Solve for x
    x = 306,930,400,986.82/638,648.14
  6. Step 6: Final answer
    x = 480,593.90

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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.