Home / 439,259.40-658,889.10-385,021.80

Finding the Fourth Proportional to 439,259.40, 658,889.10 and 385,021.80

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Solution

The fourth proportional to 439,259.40, 658,889.10 and 385,021.80 is: 577,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,259.40 : 658,889.10 = 385,021.80 : x
  2. Step 2: Convert to fraction form
    439,259.40/658,889.10 = 385,021.80/x
  3. Step 3: Cross multiply
    439,259.40x = 658,889.10 × 385,021.80
  4. Step 4: Simplify right side
    439,259.40x = 253,686,667,282.38
  5. Step 5: Solve for x
    x = 253,686,667,282.38/439,259.40
  6. Step 6: Final answer
    x = 577,532.70

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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.