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Finding the Fourth Proportional to 707,923.91, 977,297.13 and 479,687.38

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Solution

The fourth proportional to 707,923.91, 977,297.13 and 479,687.38 is: 662,213.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,923.91 : 977,297.13 = 479,687.38 : x
  2. Step 2: Convert to fraction form
    707,923.91/977,297.13 = 479,687.38/x
  3. Step 3: Cross multiply
    707,923.91x = 977,297.13 × 479,687.38
  4. Step 4: Simplify right side
    707,923.91x = 468,797,097,327.98
  5. Step 5: Solve for x
    x = 468,797,097,327.98/707,923.91
  6. Step 6: Final answer
    x = 662,213.96

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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.