Home / 743,662.80-1,026,251.84-421,434.24

Finding the Fourth Proportional to 743,662.80, 1,026,251.84 and 421,434.24

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Solution

The fourth proportional to 743,662.80, 1,026,251.84 and 421,434.24 is: 581,577.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,662.80 : 1,026,251.84 = 421,434.24 : x
  2. Step 2: Convert to fraction form
    743,662.80/1,026,251.84 = 421,434.24/x
  3. Step 3: Cross multiply
    743,662.80x = 1,026,251.84 × 421,434.24
  4. Step 4: Simplify right side
    743,662.80x = 432,497,664,239.00
  5. Step 5: Solve for x
    x = 432,497,664,239.00/743,662.80
  6. Step 6: Final answer
    x = 581,577.65

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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.