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Finding the Fourth Proportional to 671,087.13, 926,115.65 and 380,718.14

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Solution

The fourth proportional to 671,087.13, 926,115.65 and 380,718.14 is: 525,399.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,087.13 : 926,115.65 = 380,718.14 : x
  2. Step 2: Convert to fraction form
    671,087.13/926,115.65 = 380,718.14/x
  3. Step 3: Cross multiply
    671,087.13x = 926,115.65 × 380,718.14
  4. Step 4: Simplify right side
    671,087.13x = 352,589,021,158.72
  5. Step 5: Solve for x
    x = 352,589,021,158.72/671,087.13
  6. Step 6: Final answer
    x = 525,399.77

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1.5x scale

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.