Home / 687,296.49-1,029,603.71-449,919.51

Finding the Fourth Proportional to 687,296.49, 1,029,603.71 and 449,919.51

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Solution

The fourth proportional to 687,296.49, 1,029,603.71 and 449,919.51 is: 674,001.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,296.49 : 1,029,603.71 = 449,919.51 : x
  2. Step 2: Convert to fraction form
    687,296.49/1,029,603.71 = 449,919.51/x
  3. Step 3: Cross multiply
    687,296.49x = 1,029,603.71 × 449,919.51
  4. Step 4: Simplify right side
    687,296.49x = 463,238,796,697.38
  5. Step 5: Solve for x
    x = 463,238,796,697.38/687,296.49
  6. Step 6: Final answer
    x = 674,001.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.