Home / 1,188,621.76-1,782,913.20-478,631.92

Finding the Fourth Proportional to 1,188,621.76, 1,782,913.20 and 478,631.92

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Solution

The fourth proportional to 1,188,621.76, 1,782,913.20 and 478,631.92 is: 717,940.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,621.76 : 1,782,913.20 = 478,631.92 : x
  2. Step 2: Convert to fraction form
    1,188,621.76/1,782,913.20 = 478,631.92/x
  3. Step 3: Cross multiply
    1,188,621.76x = 1,782,913.20 × 478,631.92
  4. Step 4: Simplify right side
    1,188,621.76x = 853,359,168,109.34
  5. Step 5: Solve for x
    x = 853,359,168,109.34/1,188,621.76
  6. Step 6: Final answer
    x = 717,940.05

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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.