Home / 987,642.45-1,363,057.20-557,950.28

Finding the Fourth Proportional to 987,642.45, 1,363,057.20 and 557,950.28

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Solution

The fourth proportional to 987,642.45, 1,363,057.20 and 557,950.28 is: 770,033.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,642.45 : 1,363,057.20 = 557,950.28 : x
  2. Step 2: Convert to fraction form
    987,642.45/1,363,057.20 = 557,950.28/x
  3. Step 3: Cross multiply
    987,642.45x = 1,363,057.20 × 557,950.28
  4. Step 4: Simplify right side
    987,642.45x = 760,518,139,580.73
  5. Step 5: Solve for x
    x = 760,518,139,580.73/987,642.45
  6. Step 6: Final answer
    x = 770,033.87

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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.