Home / 780,011.20-1,170,016.80-691,364.80

Finding the Fourth Proportional to 780,011.20, 1,170,016.80 and 691,364.80

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Solution

The fourth proportional to 780,011.20, 1,170,016.80 and 691,364.80 is: 1,037,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,011.20 : 1,170,016.80 = 691,364.80 : x
  2. Step 2: Convert to fraction form
    780,011.20/1,170,016.80 = 691,364.80/x
  3. Step 3: Cross multiply
    780,011.20x = 1,170,016.80 × 691,364.80
  4. Step 4: Simplify right side
    780,011.20x = 808,908,430,928.64
  5. Step 5: Solve for x
    x = 808,908,430,928.64/780,011.20
  6. Step 6: Final answer
    x = 1,037,047.20

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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.