Home / 1,238,663.07-1,857,549.10-428,827.59

Finding the Fourth Proportional to 1,238,663.07, 1,857,549.10 and 428,827.59

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Solution

The fourth proportional to 1,238,663.07, 1,857,549.10 and 428,827.59 is: 643,087.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,663.07 : 1,857,549.10 = 428,827.59 : x
  2. Step 2: Convert to fraction form
    1,238,663.07/1,857,549.10 = 428,827.59/x
  3. Step 3: Cross multiply
    1,238,663.07x = 1,857,549.10 × 428,827.59
  4. Step 4: Simplify right side
    1,238,663.07x = 796,568,301,715.53
  5. Step 5: Solve for x
    x = 796,568,301,715.53/1,238,663.07
  6. Step 6: Final answer
    x = 643,087.15

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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.