Home / 678,112.89-1,017,169.12-528,465.12

Finding the Fourth Proportional to 678,112.89, 1,017,169.12 and 528,465.12

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Solution

The fourth proportional to 678,112.89, 1,017,169.12 and 528,465.12 is: 792,697.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,112.89 : 1,017,169.12 = 528,465.12 : x
  2. Step 2: Convert to fraction form
    678,112.89/1,017,169.12 = 528,465.12/x
  3. Step 3: Cross multiply
    678,112.89x = 1,017,169.12 × 528,465.12
  4. Step 4: Simplify right side
    678,112.89x = 537,538,401,061.09
  5. Step 5: Solve for x
    x = 537,538,401,061.09/678,112.89
  6. Step 6: Final answer
    x = 792,697.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.