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Finding the Fourth Proportional to 679,381.65, 937,558.32 and 373,470.91

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Solution

The fourth proportional to 679,381.65, 937,558.32 and 373,470.91 is: 515,396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,381.65 : 937,558.32 = 373,470.91 : x
  2. Step 2: Convert to fraction form
    679,381.65/937,558.32 = 373,470.91/x
  3. Step 3: Cross multiply
    679,381.65x = 937,558.32 × 373,470.91
  4. Step 4: Simplify right side
    679,381.65x = 350,150,758,948.47
  5. Step 5: Solve for x
    x = 350,150,758,948.47/679,381.65
  6. Step 6: Final answer
    x = 515,396.26

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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.