Home / 487,979.60-731,969.40-251,783.60

Finding the Fourth Proportional to 487,979.60, 731,969.40 and 251,783.60

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Solution

The fourth proportional to 487,979.60, 731,969.40 and 251,783.60 is: 377,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,979.60 : 731,969.40 = 251,783.60 : x
  2. Step 2: Convert to fraction form
    487,979.60/731,969.40 = 251,783.60/x
  3. Step 3: Cross multiply
    487,979.60x = 731,969.40 × 251,783.60
  4. Step 4: Simplify right side
    487,979.60x = 184,297,890,621.84
  5. Step 5: Solve for x
    x = 184,297,890,621.84/487,979.60
  6. Step 6: Final answer
    x = 377,675.40

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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.