Home / 879,239.67-1,316,792.75-428,548.16

Finding the Fourth Proportional to 879,239.67, 1,316,792.75 and 428,548.16

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Solution

The fourth proportional to 879,239.67, 1,316,792.75 and 428,548.16 is: 641,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,239.67 : 1,316,792.75 = 428,548.16 : x
  2. Step 2: Convert to fraction form
    879,239.67/1,316,792.75 = 428,548.16/x
  3. Step 3: Cross multiply
    879,239.67x = 1,316,792.75 × 428,548.16
  4. Step 4: Simplify right side
    879,239.67x = 564,309,101,387.14
  5. Step 5: Solve for x
    x = 564,309,101,387.14/879,239.67
  6. Step 6: Final answer
    x = 641,814.88

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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.