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Finding the Fourth Proportional to 450,390, 621,546.12 and 246,458.76

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Solution

The fourth proportional to 450,390, 621,546.12 and 246,458.76 is: 340,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,390 : 621,546.12 = 246,458.76 : x
  2. Step 2: Convert to fraction form
    450,390/621,546.12 = 246,458.76/x
  3. Step 3: Cross multiply
    450,390x = 621,546.12 × 246,458.76
  4. Step 4: Simplify right side
    450,390x = 153,185,486,018.01
  5. Step 5: Solve for x
    x = 153,185,486,018.01/450,390
  6. Step 6: Final answer
    x = 340,117.42

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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.