Home / 716,050.15-987,907.34-405,919.46

Finding the Fourth Proportional to 716,050.15, 987,907.34 and 405,919.46

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Solution

The fourth proportional to 716,050.15, 987,907.34 and 405,919.46 is: 560,031.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,050.15 : 987,907.34 = 405,919.46 : x
  2. Step 2: Convert to fraction form
    716,050.15/987,907.34 = 405,919.46/x
  3. Step 3: Cross multiply
    716,050.15x = 987,907.34 × 405,919.46
  4. Step 4: Simplify right side
    716,050.15x = 401,010,813,982.84
  5. Step 5: Solve for x
    x = 401,010,813,982.84/716,050.15
  6. Step 6: Final answer
    x = 560,031.74

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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.