Home / 987,020.40-1,362,168.60-557,405.04

Finding the Fourth Proportional to 987,020.40, 1,362,168.60 and 557,405.04

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Solution

The fourth proportional to 987,020.40, 1,362,168.60 and 557,405.04 is: 769,264.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,020.40 : 1,362,168.60 = 557,405.04 : x
  2. Step 2: Convert to fraction form
    987,020.40/1,362,168.60 = 557,405.04/x
  3. Step 3: Cross multiply
    987,020.40x = 1,362,168.60 × 557,405.04
  4. Step 4: Simplify right side
    987,020.40x = 759,279,642,969.74
  5. Step 5: Solve for x
    x = 759,279,642,969.74/987,020.40
  6. Step 6: Final answer
    x = 769,264.39

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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.