Home / 512,822,799.02-707,731,378.52-289,825,089.77

Finding the Fourth Proportional to 512,822,799.02, 707,731,378.52 and 289,825,089.77

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Solution

The fourth proportional to 512,822,799.02, 707,731,378.52 and 289,825,089.77 is: 399,978,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,822,799.02 : 707,731,378.52 = 289,825,089.77 : x
  2. Step 2: Convert to fraction form
    512,822,799.02/707,731,378.52 = 289,825,089.77/x
  3. Step 3: Cross multiply
    512,822,799.02x = 707,731,378.52 × 289,825,089.77
  4. Step 4: Simplify right side
    512,822,799.02x = 205,118,310,307,617,056
  5. Step 5: Solve for x
    x = 205,118,310,307,617,056/512,822,799.02
  6. Step 6: Final answer
    x = 399,978,921.96

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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.