Home / 497,115.28-686,424.18-405,249.40

Finding the Fourth Proportional to 497,115.28, 686,424.18 and 405,249.40

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Solution

The fourth proportional to 497,115.28, 686,424.18 and 405,249.40 is: 559,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,115.28 : 686,424.18 = 405,249.40 : x
  2. Step 2: Convert to fraction form
    497,115.28/686,424.18 = 405,249.40/x
  3. Step 3: Cross multiply
    497,115.28x = 686,424.18 × 405,249.40
  4. Step 4: Simplify right side
    497,115.28x = 278,172,987,090.49
  5. Step 5: Solve for x
    x = 278,172,987,090.49/497,115.28
  6. Step 6: Final answer
    x = 559,574.41

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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.