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Finding the Fourth Proportional to 405,701.38, 559,679.34 and 262,507.60

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Solution

The fourth proportional to 405,701.38, 559,679.34 and 262,507.60 is: 362,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,701.38 : 559,679.34 = 262,507.60 : x
  2. Step 2: Convert to fraction form
    405,701.38/559,679.34 = 262,507.60/x
  3. Step 3: Cross multiply
    405,701.38x = 559,679.34 × 262,507.60
  4. Step 4: Simplify right side
    405,701.38x = 146,920,080,312.98
  5. Step 5: Solve for x
    x = 146,920,080,312.98/405,701.38
  6. Step 6: Final answer
    x = 362,138.48

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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.