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Finding the Fourth Proportional to 432,000.30, 648,000.45 and 405,734.70

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Solution

The fourth proportional to 432,000.30, 648,000.45 and 405,734.70 is: 608,602.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,000.30 : 648,000.45 = 405,734.70 : x
  2. Step 2: Convert to fraction form
    432,000.30/648,000.45 = 405,734.70/x
  3. Step 3: Cross multiply
    432,000.30x = 648,000.45 × 405,734.70
  4. Step 4: Simplify right side
    432,000.30x = 262,916,268,180.62
  5. Step 5: Solve for x
    x = 262,916,268,180.62/432,000.30
  6. Step 6: Final answer
    x = 608,602.05

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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.