Home / 851,475.20-1,277,212.80-782,662.40

Finding the Fourth Proportional to 851,475.20, 1,277,212.80 and 782,662.40

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Solution

The fourth proportional to 851,475.20, 1,277,212.80 and 782,662.40 is: 1,173,993.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,475.20 : 1,277,212.80 = 782,662.40 : x
  2. Step 2: Convert to fraction form
    851,475.20/1,277,212.80 = 782,662.40/x
  3. Step 3: Cross multiply
    851,475.20x = 1,277,212.80 × 782,662.40
  4. Step 4: Simplify right side
    851,475.20x = 999,626,435,358.72
  5. Step 5: Solve for x
    x = 999,626,435,358.72/851,475.20
  6. Step 6: Final answer
    x = 1,173,993.60

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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.