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Finding the Fourth Proportional to 450,432, 621,445.20 and 259,440.96

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Solution

The fourth proportional to 450,432, 621,445.20 and 259,440.96 is: 357,941.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,432 : 621,445.20 = 259,440.96 : x
  2. Step 2: Convert to fraction form
    450,432/621,445.20 = 259,440.96/x
  3. Step 3: Cross multiply
    450,432x = 621,445.20 × 259,440.96
  4. Step 4: Simplify right side
    450,432x = 161,228,339,275.39
  5. Step 5: Solve for x
    x = 161,228,339,275.39/450,432
  6. Step 6: Final answer
    x = 357,941.57

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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.