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Finding the Fourth Proportional to 516,259.20, 774,388.80 and 404,284.80

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Solution

The fourth proportional to 516,259.20, 774,388.80 and 404,284.80 is: 606,427.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,259.20 : 774,388.80 = 404,284.80 : x
  2. Step 2: Convert to fraction form
    516,259.20/774,388.80 = 404,284.80/x
  3. Step 3: Cross multiply
    516,259.20x = 774,388.80 × 404,284.80
  4. Step 4: Simplify right side
    516,259.20x = 313,073,621,130.24
  5. Step 5: Solve for x
    x = 313,073,621,130.24/516,259.20
  6. Step 6: Final answer
    x = 606,427.20

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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.