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Finding the Fourth Proportional to 851,686.67, 1,278,370.67 and 452,326.34

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Solution

The fourth proportional to 851,686.67, 1,278,370.67 and 452,326.34 is: 678,935.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,686.67 : 1,278,370.67 = 452,326.34 : x
  2. Step 2: Convert to fraction form
    851,686.67/1,278,370.67 = 452,326.34/x
  3. Step 3: Cross multiply
    851,686.67x = 1,278,370.67 × 452,326.34
  4. Step 4: Simplify right side
    851,686.67x = 578,240,717,670.96
  5. Step 5: Solve for x
    x = 578,240,717,670.96/851,686.67
  6. Step 6: Final answer
    x = 678,935.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.