Home / 386,366,983.54-533,137,995.30-261,191,545.36

Finding the Fourth Proportional to 386,366,983.54, 533,137,995.30 and 261,191,545.36

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Solution

The fourth proportional to 386,366,983.54, 533,137,995.30 and 261,191,545.36 is: 360,411,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,366,983.54 : 533,137,995.30 = 261,191,545.36 : x
  2. Step 2: Convert to fraction form
    386,366,983.54/533,137,995.30 = 261,191,545.36/x
  3. Step 3: Cross multiply
    386,366,983.54x = 533,137,995.30 × 261,191,545.36
  4. Step 4: Simplify right side
    386,366,983.54x = 139,251,136,882,539,424
  5. Step 5: Solve for x
    x = 139,251,136,882,539,424/386,366,983.54
  6. Step 6: Final answer
    x = 360,411,584.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.