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Finding the Fourth Proportional to 450,620.76, 621,886.74 and 259,646.52

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Solution

The fourth proportional to 450,620.76, 621,886.74 and 259,646.52 is: 358,329.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,620.76 : 621,886.74 = 259,646.52 : x
  2. Step 2: Convert to fraction form
    450,620.76/621,886.74 = 259,646.52/x
  3. Step 3: Cross multiply
    450,620.76x = 621,886.74 × 259,646.52
  4. Step 4: Simplify right side
    450,620.76x = 161,470,727,875.15
  5. Step 5: Solve for x
    x = 161,470,727,875.15/450,620.76
  6. Step 6: Final answer
    x = 358,329.54

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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.