Home / 432,004.20-648,006.30-290,999.40

Finding the Fourth Proportional to 432,004.20, 648,006.30 and 290,999.40

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Solution

The fourth proportional to 432,004.20, 648,006.30 and 290,999.40 is: 436,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,004.20 : 648,006.30 = 290,999.40 : x
  2. Step 2: Convert to fraction form
    432,004.20/648,006.30 = 290,999.40/x
  3. Step 3: Cross multiply
    432,004.20x = 648,006.30 × 290,999.40
  4. Step 4: Simplify right side
    432,004.20x = 188,569,444,496.22
  5. Step 5: Solve for x
    x = 188,569,444,496.22/432,004.20
  6. Step 6: Final answer
    x = 436,499.10

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Similar ratio
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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.