Home / 420,007.61-629,814.38-153,581.83

Finding the Fourth Proportional to 420,007.61, 629,814.38 and 153,581.83

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Solution

The fourth proportional to 420,007.61, 629,814.38 and 153,581.83 is: 230,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,007.61 : 629,814.38 = 153,581.83 : x
  2. Step 2: Convert to fraction form
    420,007.61/629,814.38 = 153,581.83/x
  3. Step 3: Cross multiply
    420,007.61x = 629,814.38 × 153,581.83
  4. Step 4: Simplify right side
    420,007.61x = 96,728,045,040.72
  5. Step 5: Solve for x
    x = 96,728,045,040.72/420,007.61
  6. Step 6: Final answer
    x = 230,300.70

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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.