Home / 501,118,363.56-691,559,067.87-289,421,261.49

Finding the Fourth Proportional to 501,118,363.56, 691,559,067.87 and 289,421,261.49

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Solution

The fourth proportional to 501,118,363.56, 691,559,067.87 and 289,421,261.49 is: 399,410,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,118,363.56 : 691,559,067.87 = 289,421,261.49 : x
  2. Step 2: Convert to fraction form
    501,118,363.56/691,559,067.87 = 289,421,261.49/x
  3. Step 3: Cross multiply
    501,118,363.56x = 691,559,067.87 × 289,421,261.49
  4. Step 4: Simplify right side
    501,118,363.56x = 200,151,897,820,377,248
  5. Step 5: Solve for x
    x = 200,151,897,820,377,248/501,118,363.56
  6. Step 6: Final answer
    x = 399,410,423.51

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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.