Home / 487,416.30-731,015.10-320,110.80

Finding the Fourth Proportional to 487,416.30, 731,015.10 and 320,110.80

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Solution

The fourth proportional to 487,416.30, 731,015.10 and 320,110.80 is: 480,094.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,416.30 : 731,015.10 = 320,110.80 : x
  2. Step 2: Convert to fraction form
    487,416.30/731,015.10 = 320,110.80/x
  3. Step 3: Cross multiply
    487,416.30x = 731,015.10 × 320,110.80
  4. Step 4: Simplify right side
    487,416.30x = 234,005,828,473.08
  5. Step 5: Solve for x
    x = 234,005,828,473.08/487,416.30
  6. Step 6: Final answer
    x = 480,094.38

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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.