Home / 720,965.80-1,081,448.70-402,101.20

Finding the Fourth Proportional to 720,965.80, 1,081,448.70 and 402,101.20

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Solution

The fourth proportional to 720,965.80, 1,081,448.70 and 402,101.20 is: 603,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,965.80 : 1,081,448.70 = 402,101.20 : x
  2. Step 2: Convert to fraction form
    720,965.80/1,081,448.70 = 402,101.20/x
  3. Step 3: Cross multiply
    720,965.80x = 1,081,448.70 × 402,101.20
  4. Step 4: Simplify right side
    720,965.80x = 434,851,820,008.44
  5. Step 5: Solve for x
    x = 434,851,820,008.44/720,965.80
  6. Step 6: Final answer
    x = 603,151.80

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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.