Home / 768,086.40-1,152,129.60-689,548.80

Finding the Fourth Proportional to 768,086.40, 1,152,129.60 and 689,548.80

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Solution

The fourth proportional to 768,086.40, 1,152,129.60 and 689,548.80 is: 1,034,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,086.40 : 1,152,129.60 = 689,548.80 : x
  2. Step 2: Convert to fraction form
    768,086.40/1,152,129.60 = 689,548.80/x
  3. Step 3: Cross multiply
    768,086.40x = 1,152,129.60 × 689,548.80
  4. Step 4: Simplify right side
    768,086.40x = 794,449,583,124.48
  5. Step 5: Solve for x
    x = 794,449,583,124.48/768,086.40
  6. Step 6: Final answer
    x = 1,034,323.20

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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.