Home / 1,126,301.32-1,554,407.28-642,939.07

Finding the Fourth Proportional to 1,126,301.32, 1,554,407.28 and 642,939.07

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Solution

The fourth proportional to 1,126,301.32, 1,554,407.28 and 642,939.07 is: 887,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,301.32 : 1,554,407.28 = 642,939.07 : x
  2. Step 2: Convert to fraction form
    1,126,301.32/1,554,407.28 = 642,939.07/x
  3. Step 3: Cross multiply
    1,126,301.32x = 1,554,407.28 × 642,939.07
  4. Step 4: Simplify right side
    1,126,301.32x = 999,389,171,004.43
  5. Step 5: Solve for x
    x = 999,389,171,004.43/1,126,301.32
  6. Step 6: Final answer
    x = 887,319.54

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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.