Home / 1,131,830.20-1,697,162.10-421,492.60

Finding the Fourth Proportional to 1,131,830.20, 1,697,162.10 and 421,492.60

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Solution

The fourth proportional to 1,131,830.20, 1,697,162.10 and 421,492.60 is: 632,021.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,830.20 : 1,697,162.10 = 421,492.60 : x
  2. Step 2: Convert to fraction form
    1,131,830.20/1,697,162.10 = 421,492.60/x
  3. Step 3: Cross multiply
    1,131,830.20x = 1,697,162.10 × 421,492.60
  4. Step 4: Simplify right side
    1,131,830.20x = 715,341,266,150.46
  5. Step 5: Solve for x
    x = 715,341,266,150.46/1,131,830.20
  6. Step 6: Final answer
    x = 632,021.72

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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.