Home / 990,721.45-1,485,613.75-383,794.03

Finding the Fourth Proportional to 990,721.45, 1,485,613.75 and 383,794.03

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Solution

The fourth proportional to 990,721.45, 1,485,613.75 and 383,794.03 is: 575,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,721.45 : 1,485,613.75 = 383,794.03 : x
  2. Step 2: Convert to fraction form
    990,721.45/1,485,613.75 = 383,794.03/x
  3. Step 3: Cross multiply
    990,721.45x = 1,485,613.75 × 383,794.03
  4. Step 4: Simplify right side
    990,721.45x = 570,169,688,135.91
  5. Step 5: Solve for x
    x = 570,169,688,135.91/990,721.45
  6. Step 6: Final answer
    x = 575,509.58

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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.