Home / 497,957,740.05-687,242,215.22-289,113,882.69

Finding the Fourth Proportional to 497,957,740.05, 687,242,215.22 and 289,113,882.69

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Solution

The fourth proportional to 497,957,740.05, 687,242,215.22 and 289,113,882.69 is: 399,012,304.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,957,740.05 : 687,242,215.22 = 289,113,882.69 : x
  2. Step 2: Convert to fraction form
    497,957,740.05/687,242,215.22 = 289,113,882.69/x
  3. Step 3: Cross multiply
    497,957,740.05x = 687,242,215.22 × 289,113,882.69
  4. Step 4: Simplify right side
    497,957,740.05x = 198,691,265,189,285,248
  5. Step 5: Solve for x
    x = 198,691,265,189,285,248/497,957,740.05
  6. Step 6: Final answer
    x = 399,012,304.07

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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.