Home / 1,117.35-1,541.96-620.00

Finding the Fourth Proportional to 1,117.35, 1,541.96 and 620.00

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Solution

The fourth proportional to 1,117.35, 1,541.96 and 620.00 is: 855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.35 : 1,541.96 = 620.00 : x
  2. Step 2: Convert to fraction form
    1,117.35/1,541.96 = 620.00/x
  3. Step 3: Cross multiply
    1,117.35x = 1,541.96 × 620.00
  4. Step 4: Simplify right side
    1,117.35x = 956,004.39
  5. Step 5: Solve for x
    x = 956,004.39/1,117.35
  6. Step 6: Final answer
    x = 855.60

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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.