Home / 720,106.80-1,080,160.20-580,138.80

Finding the Fourth Proportional to 720,106.80, 1,080,160.20 and 580,138.80

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Solution

The fourth proportional to 720,106.80, 1,080,160.20 and 580,138.80 is: 870,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,106.80 : 1,080,160.20 = 580,138.80 : x
  2. Step 2: Convert to fraction form
    720,106.80/1,080,160.20 = 580,138.80/x
  3. Step 3: Cross multiply
    720,106.80x = 1,080,160.20 × 580,138.80
  4. Step 4: Simplify right side
    720,106.80x = 626,642,842,235.76
  5. Step 5: Solve for x
    x = 626,642,842,235.76/720,106.80
  6. Step 6: Final answer
    x = 870,208.20

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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.