Home / 1,126,478.64-1,554,481.08-643,024.56

Finding the Fourth Proportional to 1,126,478.64, 1,554,481.08 and 643,024.56

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Solution

The fourth proportional to 1,126,478.64, 1,554,481.08 and 643,024.56 is: 887,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,478.64 : 1,554,481.08 = 643,024.56 : x
  2. Step 2: Convert to fraction form
    1,126,478.64/1,554,481.08 = 643,024.56/x
  3. Step 3: Cross multiply
    1,126,478.64x = 1,554,481.08 × 643,024.56
  4. Step 4: Simplify right side
    1,126,478.64x = 999,569,512,495.33
  5. Step 5: Solve for x
    x = 999,569,512,495.33/1,126,478.64
  6. Step 6: Final answer
    x = 887,339.96

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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.