Home / 751,143.72-1,036,012.90-521,701.31

Finding the Fourth Proportional to 751,143.72, 1,036,012.90 and 521,701.31

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Solution

The fourth proportional to 751,143.72, 1,036,012.90 and 521,701.31 is: 719,555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,143.72 : 1,036,012.90 = 521,701.31 : x
  2. Step 2: Convert to fraction form
    751,143.72/1,036,012.90 = 521,701.31/x
  3. Step 3: Cross multiply
    751,143.72x = 1,036,012.90 × 521,701.31
  4. Step 4: Simplify right side
    751,143.72x = 540,489,287,106.90
  5. Step 5: Solve for x
    x = 540,489,287,106.90/751,143.72
  6. Step 6: Final answer
    x = 719,555.09

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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.