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Finding the Fourth Proportional to 678,330.76, 936,049.60 and 376,501

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Solution

The fourth proportional to 678,330.76, 936,049.60 and 376,501 is: 519,545.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,330.76 : 936,049.60 = 376,501 : x
  2. Step 2: Convert to fraction form
    678,330.76/936,049.60 = 376,501/x
  3. Step 3: Cross multiply
    678,330.76x = 936,049.60 × 376,501
  4. Step 4: Simplify right side
    678,330.76x = 352,423,610,449.60
  5. Step 5: Solve for x
    x = 352,423,610,449.60/678,330.76
  6. Step 6: Final answer
    x = 519,545.38

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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.