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Finding the Fourth Proportional to 707,658.45, 976,580.34 and 385,374.84

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Solution

The fourth proportional to 707,658.45, 976,580.34 and 385,374.84 is: 531,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,658.45 : 976,580.34 = 385,374.84 : x
  2. Step 2: Convert to fraction form
    707,658.45/976,580.34 = 385,374.84/x
  3. Step 3: Cross multiply
    707,658.45x = 976,580.34 × 385,374.84
  4. Step 4: Simplify right side
    707,658.45x = 376,349,492,274.65
  5. Step 5: Solve for x
    x = 376,349,492,274.65/707,658.45
  6. Step 6: Final answer
    x = 531,823.64

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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.