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Finding the Fourth Proportional to 612,713.22, 845,312.27 and 380,032.50

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Solution

The fourth proportional to 612,713.22, 845,312.27 and 380,032.50 is: 524,300.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,713.22 : 845,312.27 = 380,032.50 : x
  2. Step 2: Convert to fraction form
    612,713.22/845,312.27 = 380,032.50/x
  3. Step 3: Cross multiply
    612,713.22x = 845,312.27 × 380,032.50
  4. Step 4: Simplify right side
    612,713.22x = 321,246,135,248.78
  5. Step 5: Solve for x
    x = 321,246,135,248.78/612,713.22
  6. Step 6: Final answer
    x = 524,300.97

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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.