Home / 497,459-686,498.28-271,109.36

Finding the Fourth Proportional to 497,459, 686,498.28 and 271,109.36

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Solution

The fourth proportional to 497,459, 686,498.28 and 271,109.36 is: 374,133.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,459 : 686,498.28 = 271,109.36 : x
  2. Step 2: Convert to fraction form
    497,459/686,498.28 = 271,109.36/x
  3. Step 3: Cross multiply
    497,459x = 686,498.28 × 271,109.36
  4. Step 4: Simplify right side
    497,459x = 186,116,109,331.90
  5. Step 5: Solve for x
    x = 186,116,109,331.90/497,459
  6. Step 6: Final answer
    x = 374,133.57

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1.5x scale

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.