Home / 920,088.11-1,269,632.53-678,500.75

Finding the Fourth Proportional to 920,088.11, 1,269,632.53 and 678,500.75

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Solution

The fourth proportional to 920,088.11, 1,269,632.53 and 678,500.75 is: 936,265.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,088.11 : 1,269,632.53 = 678,500.75 : x
  2. Step 2: Convert to fraction form
    920,088.11/1,269,632.53 = 678,500.75/x
  3. Step 3: Cross multiply
    920,088.11x = 1,269,632.53 × 678,500.75
  4. Step 4: Simplify right side
    920,088.11x = 861,446,614,088.73
  5. Step 5: Solve for x
    x = 861,446,614,088.73/920,088.11
  6. Step 6: Final answer
    x = 936,265.35

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Double scale
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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.