Home / 808,703.20-1,212,884.70-408,968.20

Finding the Fourth Proportional to 808,703.20, 1,212,884.70 and 408,968.20

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Solution

The fourth proportional to 808,703.20, 1,212,884.70 and 408,968.20 is: 613,366.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,703.20 : 1,212,884.70 = 408,968.20 : x
  2. Step 2: Convert to fraction form
    808,703.20/1,212,884.70 = 408,968.20/x
  3. Step 3: Cross multiply
    808,703.20x = 1,212,884.70 × 408,968.20
  4. Step 4: Simplify right side
    808,703.20x = 496,031,272,566.54
  5. Step 5: Solve for x
    x = 496,031,272,566.54/808,703.20
  6. Step 6: Final answer
    x = 613,366.28

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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.