Home / 658,836.72-908,844.10-400,792.60

Finding the Fourth Proportional to 658,836.72, 908,844.10 and 400,792.60

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Solution

The fourth proportional to 658,836.72, 908,844.10 and 400,792.60 is: 552,880.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,836.72 : 908,844.10 = 400,792.60 : x
  2. Step 2: Convert to fraction form
    658,836.72/908,844.10 = 400,792.60/x
  3. Step 3: Cross multiply
    658,836.72x = 908,844.10 × 400,792.60
  4. Step 4: Simplify right side
    658,836.72x = 364,257,989,833.66
  5. Step 5: Solve for x
    x = 364,257,989,833.66/658,836.72
  6. Step 6: Final answer
    x = 552,880.52

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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.