Home / 660,213.03-911,174.43-388,267.77

Finding the Fourth Proportional to 660,213.03, 911,174.43 and 388,267.77

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Solution

The fourth proportional to 660,213.03, 911,174.43 and 388,267.77 is: 535,856.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,213.03 : 911,174.43 = 388,267.77 : x
  2. Step 2: Convert to fraction form
    660,213.03/911,174.43 = 388,267.77/x
  3. Step 3: Cross multiply
    660,213.03x = 911,174.43 × 388,267.77
  4. Step 4: Simplify right side
    660,213.03x = 353,779,664,017.12
  5. Step 5: Solve for x
    x = 353,779,664,017.12/660,213.03
  6. Step 6: Final answer
    x = 535,856.83

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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.