Home / 786,234.40-1,179,643.20-313,259.20

Finding the Fourth Proportional to 786,234.40, 1,179,643.20 and 313,259.20

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Solution

The fourth proportional to 786,234.40, 1,179,643.20 and 313,259.20 is: 470,004.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,234.40 : 1,179,643.20 = 313,259.20 : x
  2. Step 2: Convert to fraction form
    786,234.40/1,179,643.20 = 313,259.20/x
  3. Step 3: Cross multiply
    786,234.40x = 1,179,643.20 × 313,259.20
  4. Step 4: Simplify right side
    786,234.40x = 369,534,085,117.44
  5. Step 5: Solve for x
    x = 369,534,085,117.44/786,234.40
  6. Step 6: Final answer
    x = 470,004.98

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Half scale
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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.