Home / 765,799.61-1,056,766.55-421,628.37

Finding the Fourth Proportional to 765,799.61, 1,056,766.55 and 421,628.37

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Solution

The fourth proportional to 765,799.61, 1,056,766.55 and 421,628.37 is: 581,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,799.61 : 1,056,766.55 = 421,628.37 : x
  2. Step 2: Convert to fraction form
    765,799.61/1,056,766.55 = 421,628.37/x
  3. Step 3: Cross multiply
    765,799.61x = 1,056,766.55 × 421,628.37
  4. Step 4: Simplify right side
    765,799.61x = 445,562,755,838.88
  5. Step 5: Solve for x
    x = 445,562,755,838.88/765,799.61
  6. Step 6: Final answer
    x = 581,826.83

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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.