Home / 808,616.80-1,212,925.20-756,128.80

Finding the Fourth Proportional to 808,616.80, 1,212,925.20 and 756,128.80

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Solution

The fourth proportional to 808,616.80, 1,212,925.20 and 756,128.80 is: 1,134,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,616.80 : 1,212,925.20 = 756,128.80 : x
  2. Step 2: Convert to fraction form
    808,616.80/1,212,925.20 = 756,128.80/x
  3. Step 3: Cross multiply
    808,616.80x = 1,212,925.20 × 756,128.80
  4. Step 4: Simplify right side
    808,616.80x = 917,127,675,965.76
  5. Step 5: Solve for x
    x = 917,127,675,965.76/808,616.80
  6. Step 6: Final answer
    x = 1,134,193.20

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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.