Home / 497,911.98-687,015.48-291,140.58

Finding the Fourth Proportional to 497,911.98, 687,015.48 and 291,140.58

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Solution

The fourth proportional to 497,911.98, 687,015.48 and 291,140.58 is: 401,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,911.98 : 687,015.48 = 291,140.58 : x
  2. Step 2: Convert to fraction form
    497,911.98/687,015.48 = 291,140.58/x
  3. Step 3: Cross multiply
    497,911.98x = 687,015.48 × 291,140.58
  4. Step 4: Simplify right side
    497,911.98x = 200,018,085,316.18
  5. Step 5: Solve for x
    x = 200,018,085,316.18/497,911.98
  6. Step 6: Final answer
    x = 401,713.74

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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.