Home / 1,117.28-1,541.82-619.84

Finding the Fourth Proportional to 1,117.28, 1,541.82 and 619.84

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Solution

The fourth proportional to 1,117.28, 1,541.82 and 619.84 is: 855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.28 : 1,541.82 = 619.84 : x
  2. Step 2: Convert to fraction form
    1,117.28/1,541.82 = 619.84/x
  3. Step 3: Cross multiply
    1,117.28x = 1,541.82 × 619.84
  4. Step 4: Simplify right side
    1,117.28x = 955,681.71
  5. Step 5: Solve for x
    x = 955,681.71/1,117.28
  6. Step 6: Final answer
    x = 855.36

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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.