Home / 658,605.17-908,917.13-403,921.73

Finding the Fourth Proportional to 658,605.17, 908,917.13 and 403,921.73

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Solution

The fourth proportional to 658,605.17, 908,917.13 and 403,921.73 is: 557,437.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,605.17 : 908,917.13 = 403,921.73 : x
  2. Step 2: Convert to fraction form
    658,605.17/908,917.13 = 403,921.73/x
  3. Step 3: Cross multiply
    658,605.17x = 908,917.13 × 403,921.73
  4. Step 4: Simplify right side
    658,605.17x = 367,131,379,576.24
  5. Step 5: Solve for x
    x = 367,131,379,576.24/658,605.17
  6. Step 6: Final answer
    x = 557,437.74

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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.