Home / 399,178,239.40-599,215,256.70-308,702,924.20

Finding the Fourth Proportional to 399,178,239.40, 599,215,256.70 and 308,702,924.20

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Solution

The fourth proportional to 399,178,239.40, 599,215,256.70 and 308,702,924.20 is: 463,400,766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,178,239.40 : 599,215,256.70 = 308,702,924.20 : x
  2. Step 2: Convert to fraction form
    399,178,239.40/599,215,256.70 = 308,702,924.20/x
  3. Step 3: Cross multiply
    399,178,239.40x = 599,215,256.70 × 308,702,924.20
  4. Step 4: Simplify right side
    399,178,239.40x = 184,979,501,968,543,648
  5. Step 5: Solve for x
    x = 184,979,501,968,543,648/399,178,239.40
  6. Step 6: Final answer
    x = 463,400,766.15

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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.