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Finding the Fourth Proportional to 380,405.46, 570,394.80 and 260,597.73

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Solution

The fourth proportional to 380,405.46, 570,394.80 and 260,597.73 is: 390,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,405.46 : 570,394.80 = 260,597.73 : x
  2. Step 2: Convert to fraction form
    380,405.46/570,394.80 = 260,597.73/x
  3. Step 3: Cross multiply
    380,405.46x = 570,394.80 × 260,597.73
  4. Step 4: Simplify right side
    380,405.46x = 148,643,590,083.80
  5. Step 5: Solve for x
    x = 148,643,590,083.80/380,405.46
  6. Step 6: Final answer
    x = 390,750.41

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1.5x scale

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.