Home / 505,828.80-758,743.20-253,886.40

Finding the Fourth Proportional to 505,828.80, 758,743.20 and 253,886.40

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Solution

The fourth proportional to 505,828.80, 758,743.20 and 253,886.40 is: 380,829.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,828.80 : 758,743.20 = 253,886.40 : x
  2. Step 2: Convert to fraction form
    505,828.80/758,743.20 = 253,886.40/x
  3. Step 3: Cross multiply
    505,828.80x = 758,743.20 × 253,886.40
  4. Step 4: Simplify right side
    505,828.80x = 192,634,579,572.48
  5. Step 5: Solve for x
    x = 192,634,579,572.48/505,828.80
  6. Step 6: Final answer
    x = 380,829.60

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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.