Home / 1,347,904.80-2,021,857.20-639,316.80

Finding the Fourth Proportional to 1,347,904.80, 2,021,857.20 and 639,316.80

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Solution

The fourth proportional to 1,347,904.80, 2,021,857.20 and 639,316.80 is: 958,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347,904.80 : 2,021,857.20 = 639,316.80 : x
  2. Step 2: Convert to fraction form
    1,347,904.80/2,021,857.20 = 639,316.80/x
  3. Step 3: Cross multiply
    1,347,904.80x = 2,021,857.20 × 639,316.80
  4. Step 4: Simplify right side
    1,347,904.80x = 1,292,607,275,160.96
  5. Step 5: Solve for x
    x = 1,292,607,275,160.96/1,347,904.80
  6. Step 6: Final answer
    x = 958,975.20

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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.