Home / 765,524.40-1,056,415.31-421,352.96

Finding the Fourth Proportional to 765,524.40, 1,056,415.31 and 421,352.96

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Solution

The fourth proportional to 765,524.40, 1,056,415.31 and 421,352.96 is: 581,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,524.40 : 1,056,415.31 = 421,352.96 : x
  2. Step 2: Convert to fraction form
    765,524.40/1,056,415.31 = 421,352.96/x
  3. Step 3: Cross multiply
    765,524.40x = 1,056,415.31 × 421,352.96
  4. Step 4: Simplify right side
    765,524.40x = 445,123,714,419.16
  5. Step 5: Solve for x
    x = 445,123,714,419.16/765,524.40
  6. Step 6: Final answer
    x = 581,462.48

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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.