Home / 501,687,522.85-692,172,588.10-289,917,203.21

Finding the Fourth Proportional to 501,687,522.85, 692,172,588.10 and 289,917,203.21

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Solution

The fourth proportional to 501,687,522.85, 692,172,588.10 and 289,917,203.21 is: 399,995,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,687,522.85 : 692,172,588.10 = 289,917,203.21 : x
  2. Step 2: Convert to fraction form
    501,687,522.85/692,172,588.10 = 289,917,203.21/x
  3. Step 3: Cross multiply
    501,687,522.85x = 692,172,588.10 × 289,917,203.21
  4. Step 4: Simplify right side
    501,687,522.85x = 200,672,740,880,579,328
  5. Step 5: Solve for x
    x = 200,672,740,880,579,328/501,687,522.85
  6. Step 6: Final answer
    x = 399,995,478.74

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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.