Home / 851,412.74-1,175,154.28-511,815.38

Finding the Fourth Proportional to 851,412.74, 1,175,154.28 and 511,815.38

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Solution

The fourth proportional to 851,412.74, 1,175,154.28 and 511,815.38 is: 706,428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,412.74 : 1,175,154.28 = 511,815.38 : x
  2. Step 2: Convert to fraction form
    851,412.74/1,175,154.28 = 511,815.38/x
  3. Step 3: Cross multiply
    851,412.74x = 1,175,154.28 × 511,815.38
  4. Step 4: Simplify right side
    851,412.74x = 601,462,027,221.52
  5. Step 5: Solve for x
    x = 601,462,027,221.52/851,412.74
  6. Step 6: Final answer
    x = 706,428.27

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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.