Home / 665,218.40-916,922.90-519,769.85

Finding the Fourth Proportional to 665,218.40, 916,922.90 and 519,769.85

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Solution

The fourth proportional to 665,218.40, 916,922.90 and 519,769.85 is: 716,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,218.40 : 916,922.90 = 519,769.85 : x
  2. Step 2: Convert to fraction form
    665,218.40/916,922.90 = 519,769.85/x
  3. Step 3: Cross multiply
    665,218.40x = 916,922.90 × 519,769.85
  4. Step 4: Simplify right side
    665,218.40x = 476,588,874,909.38
  5. Step 5: Solve for x
    x = 476,588,874,909.38/665,218.40
  6. Step 6: Final answer
    x = 716,439.71

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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.