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Finding the Fourth Proportional to 671,356.50, 926,487.06 and 380,987.14

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Solution

The fourth proportional to 671,356.50, 926,487.06 and 380,987.14 is: 525,770.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,356.50 : 926,487.06 = 380,987.14 : x
  2. Step 2: Convert to fraction form
    671,356.50/926,487.06 = 380,987.14/x
  3. Step 3: Cross multiply
    671,356.50x = 926,487.06 × 380,987.14
  4. Step 4: Simplify right side
    671,356.50x = 352,979,655,236.41
  5. Step 5: Solve for x
    x = 352,979,655,236.41/671,356.50
  6. Step 6: Final answer
    x = 525,770.82

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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.