Home / 987,621.80-1,363,028.85-557,929.60

Finding the Fourth Proportional to 987,621.80, 1,363,028.85 and 557,929.60

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Solution

The fourth proportional to 987,621.80, 1,363,028.85 and 557,929.60 is: 770,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,621.80 : 1,363,028.85 = 557,929.60 : x
  2. Step 2: Convert to fraction form
    987,621.80/1,363,028.85 = 557,929.60/x
  3. Step 3: Cross multiply
    987,621.80x = 1,363,028.85 × 557,929.60
  4. Step 4: Simplify right side
    987,621.80x = 760,474,141,068.96
  5. Step 5: Solve for x
    x = 760,474,141,068.96/987,621.80
  6. Step 6: Final answer
    x = 770,005.43

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1.5x scale

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.