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Finding the Fourth Proportional to 674,232.06, 930,440.26 and 387,746

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Solution

The fourth proportional to 674,232.06, 930,440.26 and 387,746 is: 535,089.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,232.06 : 930,440.26 = 387,746 : x
  2. Step 2: Convert to fraction form
    674,232.06/930,440.26 = 387,746/x
  3. Step 3: Cross multiply
    674,232.06x = 930,440.26 × 387,746
  4. Step 4: Simplify right side
    674,232.06x = 360,774,489,053.96
  5. Step 5: Solve for x
    x = 360,774,489,053.96/674,232.06
  6. Step 6: Final answer
    x = 535,089.49

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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.