Home / 987,645.87-1,363,061.91-557,953.68

Finding the Fourth Proportional to 987,645.87, 1,363,061.91 and 557,953.68

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Solution

The fourth proportional to 987,645.87, 1,363,061.91 and 557,953.68 is: 770,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,645.87 : 1,363,061.91 = 557,953.68 : x
  2. Step 2: Convert to fraction form
    987,645.87/1,363,061.91 = 557,953.68/x
  3. Step 3: Cross multiply
    987,645.87x = 1,363,061.91 × 557,953.68
  4. Step 4: Simplify right side
    987,645.87x = 760,525,408,752.33
  5. Step 5: Solve for x
    x = 760,525,408,752.33/987,645.87
  6. Step 6: Final answer
    x = 770,038.57

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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.