Home / 399,376,665.60-599,064,998.40-289,687,243.20

Finding the Fourth Proportional to 399,376,665.60, 599,064,998.40 and 289,687,243.20

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Solution

The fourth proportional to 399,376,665.60, 599,064,998.40 and 289,687,243.20 is: 434,530,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,376,665.60 : 599,064,998.40 = 289,687,243.20 : x
  2. Step 2: Convert to fraction form
    399,376,665.60/599,064,998.40 = 289,687,243.20/x
  3. Step 3: Cross multiply
    399,376,665.60x = 599,064,998.40 × 289,687,243.20
  4. Step 4: Simplify right side
    399,376,665.60x = 173,541,487,884,108,384
  5. Step 5: Solve for x
    x = 173,541,487,884,108,384/399,376,665.60
  6. Step 6: Final answer
    x = 434,530,864.80

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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.