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Finding the Fourth Proportional to 432,068.30, 648,102.45 and 405,802.70

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Solution

The fourth proportional to 432,068.30, 648,102.45 and 405,802.70 is: 608,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,068.30 : 648,102.45 = 405,802.70 : x
  2. Step 2: Convert to fraction form
    432,068.30/648,102.45 = 405,802.70/x
  3. Step 3: Cross multiply
    432,068.30x = 648,102.45 × 405,802.70
  4. Step 4: Simplify right side
    432,068.30x = 263,001,724,086.62
  5. Step 5: Solve for x
    x = 263,001,724,086.62/432,068.30
  6. Step 6: Final answer
    x = 608,704.05

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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.