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Finding the Fourth Proportional to 666,624.67, 920,061.79 and 376,324.72

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Solution

The fourth proportional to 666,624.67, 920,061.79 and 376,324.72 is: 519,395.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,624.67 : 920,061.79 = 376,324.72 : x
  2. Step 2: Convert to fraction form
    666,624.67/920,061.79 = 376,324.72/x
  3. Step 3: Cross multiply
    666,624.67x = 920,061.79 × 376,324.72
  4. Step 4: Simplify right side
    666,624.67x = 346,241,995,504.45
  5. Step 5: Solve for x
    x = 346,241,995,504.45/666,624.67
  6. Step 6: Final answer
    x = 519,395.71

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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.