Home / 778,630.80-1,167,946.20-768,133.20

Finding the Fourth Proportional to 778,630.80, 1,167,946.20 and 768,133.20

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Solution

The fourth proportional to 778,630.80, 1,167,946.20 and 768,133.20 is: 1,152,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,630.80 : 1,167,946.20 = 768,133.20 : x
  2. Step 2: Convert to fraction form
    778,630.80/1,167,946.20 = 768,133.20/x
  3. Step 3: Cross multiply
    778,630.80x = 1,167,946.20 × 768,133.20
  4. Step 4: Simplify right side
    778,630.80x = 897,138,252,033.84
  5. Step 5: Solve for x
    x = 897,138,252,033.84/778,630.80
  6. Step 6: Final answer
    x = 1,152,199.80

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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.