Home / 990,569.45-1,367,051.18-555,021.72

Finding the Fourth Proportional to 990,569.45, 1,367,051.18 and 555,021.72

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Solution

The fourth proportional to 990,569.45, 1,367,051.18 and 555,021.72 is: 765,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,569.45 : 1,367,051.18 = 555,021.72 : x
  2. Step 2: Convert to fraction form
    990,569.45/1,367,051.18 = 555,021.72/x
  3. Step 3: Cross multiply
    990,569.45x = 1,367,051.18 × 555,021.72
  4. Step 4: Simplify right side
    990,569.45x = 758,743,094,476.52
  5. Step 5: Solve for x
    x = 758,743,094,476.52/990,569.45
  6. Step 6: Final answer
    x = 765,966.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.