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Finding the Fourth Proportional to 637,892, 880,331.28 and 351,412.64

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Solution

The fourth proportional to 637,892, 880,331.28 and 351,412.64 is: 484,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,892 : 880,331.28 = 351,412.64 : x
  2. Step 2: Convert to fraction form
    637,892/880,331.28 = 351,412.64/x
  3. Step 3: Cross multiply
    637,892x = 880,331.28 × 351,412.64
  4. Step 4: Simplify right side
    637,892x = 309,359,539,179.38
  5. Step 5: Solve for x
    x = 309,359,539,179.38/637,892
  6. Step 6: Final answer
    x = 484,971.66

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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.