Home / 488,121.10-732,619.05-421,636.30

Finding the Fourth Proportional to 488,121.10, 732,619.05 and 421,636.30

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Solution

The fourth proportional to 488,121.10, 732,619.05 and 421,636.30 is: 632,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,121.10 : 732,619.05 = 421,636.30 : x
  2. Step 2: Convert to fraction form
    488,121.10/732,619.05 = 421,636.30/x
  3. Step 3: Cross multiply
    488,121.10x = 732,619.05 × 421,636.30
  4. Step 4: Simplify right side
    488,121.10x = 308,898,785,551.52
  5. Step 5: Solve for x
    x = 308,898,785,551.52/488,121.10
  6. Step 6: Final answer
    x = 632,832.27

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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.