Home / 442,004.18-609,805.76-289,129.64

Finding the Fourth Proportional to 442,004.18, 609,805.76 and 289,129.64

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Solution

The fourth proportional to 442,004.18, 609,805.76 and 289,129.64 is: 398,894.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,004.18 : 609,805.76 = 289,129.64 : x
  2. Step 2: Convert to fraction form
    442,004.18/609,805.76 = 289,129.64/x
  3. Step 3: Cross multiply
    442,004.18x = 609,805.76 × 289,129.64
  4. Step 4: Simplify right side
    442,004.18x = 176,312,919,858.73
  5. Step 5: Solve for x
    x = 176,312,919,858.73/442,004.18
  6. Step 6: Final answer
    x = 398,894.24

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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.