Home / 786,321.40-1,179,773.70-313,346.20

Finding the Fourth Proportional to 786,321.40, 1,179,773.70 and 313,346.20

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Solution

The fourth proportional to 786,321.40, 1,179,773.70 and 313,346.20 is: 470,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,321.40 : 1,179,773.70 = 313,346.20 : x
  2. Step 2: Convert to fraction form
    786,321.40/1,179,773.70 = 313,346.20/x
  3. Step 3: Cross multiply
    786,321.40x = 1,179,773.70 × 313,346.20
  4. Step 4: Simplify right side
    786,321.40x = 369,677,605,754.94
  5. Step 5: Solve for x
    x = 369,677,605,754.94/786,321.40
  6. Step 6: Final answer
    x = 470,135.50

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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.