Home / 403,660.55-557,618.15-382,402.91

Finding the Fourth Proportional to 403,660.55, 557,618.15 and 382,402.91

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Solution

The fourth proportional to 403,660.55, 557,618.15 and 382,402.91 is: 528,252.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,660.55 : 557,618.15 = 382,402.91 : x
  2. Step 2: Convert to fraction form
    403,660.55/557,618.15 = 382,402.91/x
  3. Step 3: Cross multiply
    403,660.55x = 557,618.15 × 382,402.91
  4. Step 4: Simplify right side
    403,660.55x = 213,234,805,578.87
  5. Step 5: Solve for x
    x = 213,234,805,578.87/403,660.55
  6. Step 6: Final answer
    x = 528,252.77

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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.