Home / 859,320.80-1,288,981.20-660,024.80

Finding the Fourth Proportional to 859,320.80, 1,288,981.20 and 660,024.80

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Solution

The fourth proportional to 859,320.80, 1,288,981.20 and 660,024.80 is: 990,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,320.80 : 1,288,981.20 = 660,024.80 : x
  2. Step 2: Convert to fraction form
    859,320.80/1,288,981.20 = 660,024.80/x
  3. Step 3: Cross multiply
    859,320.80x = 1,288,981.20 × 660,024.80
  4. Step 4: Simplify right side
    859,320.80x = 850,759,558,733.76
  5. Step 5: Solve for x
    x = 850,759,558,733.76/859,320.80
  6. Step 6: Final answer
    x = 990,037.20

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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.