Home / 1,178,128.80-1,625,824.23-661,904.46

Finding the Fourth Proportional to 1,178,128.80, 1,625,824.23 and 661,904.46

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Solution

The fourth proportional to 1,178,128.80, 1,625,824.23 and 661,904.46 is: 913,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,128.80 : 1,625,824.23 = 661,904.46 : x
  2. Step 2: Convert to fraction form
    1,178,128.80/1,625,824.23 = 661,904.46/x
  3. Step 3: Cross multiply
    1,178,128.80x = 1,625,824.23 × 661,904.46
  4. Step 4: Simplify right side
    1,178,128.80x = 1,076,140,309,013.07
  5. Step 5: Solve for x
    x = 1,076,140,309,013.07/1,178,128.80
  6. Step 6: Final answer
    x = 913,431.80

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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.