Home / 808,043.72-1,212,422.59-423,700.79

Finding the Fourth Proportional to 808,043.72, 1,212,422.59 and 423,700.79

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Solution

The fourth proportional to 808,043.72, 1,212,422.59 and 423,700.79 is: 635,738.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,043.72 : 1,212,422.59 = 423,700.79 : x
  2. Step 2: Convert to fraction form
    808,043.72/1,212,422.59 = 423,700.79/x
  3. Step 3: Cross multiply
    808,043.72x = 1,212,422.59 × 423,700.79
  4. Step 4: Simplify right side
    808,043.72x = 513,704,412,227.90
  5. Step 5: Solve for x
    x = 513,704,412,227.90/808,043.72
  6. Step 6: Final answer
    x = 635,738.39

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1.5x scale

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.