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Finding the Fourth Proportional to 405,430.60, 607,271.10 and 335,446.60

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Solution

The fourth proportional to 405,430.60, 607,271.10 and 335,446.60 is: 502,446.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,430.60 : 607,271.10 = 335,446.60 : x
  2. Step 2: Convert to fraction form
    405,430.60/607,271.10 = 335,446.60/x
  3. Step 3: Cross multiply
    405,430.60x = 607,271.10 × 335,446.60
  4. Step 4: Simplify right side
    405,430.60x = 203,707,025,773.26
  5. Step 5: Solve for x
    x = 203,707,025,773.26/405,430.60
  6. Step 6: Final answer
    x = 502,446.10

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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.