Home / 830,089.80-1,245,134.70-756,606.60

Finding the Fourth Proportional to 830,089.80, 1,245,134.70 and 756,606.60

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Solution

The fourth proportional to 830,089.80, 1,245,134.70 and 756,606.60 is: 1,134,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,089.80 : 1,245,134.70 = 756,606.60 : x
  2. Step 2: Convert to fraction form
    830,089.80/1,245,134.70 = 756,606.60/x
  3. Step 3: Cross multiply
    830,089.80x = 1,245,134.70 × 756,606.60
  4. Step 4: Simplify right side
    830,089.80x = 942,077,131,909.02
  5. Step 5: Solve for x
    x = 942,077,131,909.02/830,089.80
  6. Step 6: Final answer
    x = 1,134,909.90

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Double scale
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Similar ratio
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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.