Home / 842,890.40-1,261,225.20-768,240.80

Finding the Fourth Proportional to 842,890.40, 1,261,225.20 and 768,240.80

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Solution

The fourth proportional to 842,890.40, 1,261,225.20 and 768,240.80 is: 1,149,526.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,890.40 : 1,261,225.20 = 768,240.80 : x
  2. Step 2: Convert to fraction form
    842,890.40/1,261,225.20 = 768,240.80/x
  3. Step 3: Cross multiply
    842,890.40x = 1,261,225.20 × 768,240.80
  4. Step 4: Simplify right side
    842,890.40x = 968,924,656,628.16
  5. Step 5: Solve for x
    x = 968,924,656,628.16/842,890.40
  6. Step 6: Final answer
    x = 1,149,526.27

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1.5x scale

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.