Home / 497,957,737.05-687,242,211.08-289,113,879.69

Finding the Fourth Proportional to 497,957,737.05, 687,242,211.08 and 289,113,879.69

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Solution

The fourth proportional to 497,957,737.05, 687,242,211.08 and 289,113,879.69 is: 399,012,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,957,737.05 : 687,242,211.08 = 289,113,879.69 : x
  2. Step 2: Convert to fraction form
    497,957,737.05/687,242,211.08 = 289,113,879.69/x
  3. Step 3: Cross multiply
    497,957,737.05x = 687,242,211.08 × 289,113,879.69
  4. Step 4: Simplify right side
    497,957,737.05x = 198,691,261,930,627,136
  5. Step 5: Solve for x
    x = 198,691,261,930,627,136/497,957,737.05
  6. Step 6: Final answer
    x = 399,012,299.93

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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.