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Finding the Fourth Proportional to 405,625.20, 608,437.80 and 264,620.40

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Solution

The fourth proportional to 405,625.20, 608,437.80 and 264,620.40 is: 396,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,625.20 : 608,437.80 = 264,620.40 : x
  2. Step 2: Convert to fraction form
    405,625.20/608,437.80 = 264,620.40/x
  3. Step 3: Cross multiply
    405,625.20x = 608,437.80 × 264,620.40
  4. Step 4: Simplify right side
    405,625.20x = 161,005,054,011.12
  5. Step 5: Solve for x
    x = 161,005,054,011.12/405,625.20
  6. Step 6: Final answer
    x = 396,930.60

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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.