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Finding the Fourth Proportional to 674,987.86, 931,568.93 and 384,703.77

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Solution

The fourth proportional to 674,987.86, 931,568.93 and 384,703.77 is: 530,940.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,987.86 : 931,568.93 = 384,703.77 : x
  2. Step 2: Convert to fraction form
    674,987.86/931,568.93 = 384,703.77/x
  3. Step 3: Cross multiply
    674,987.86x = 931,568.93 × 384,703.77
  4. Step 4: Simplify right side
    674,987.86x = 358,378,084,562.33
  5. Step 5: Solve for x
    x = 358,378,084,562.33/674,987.86
  6. Step 6: Final answer
    x = 530,940.04

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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.