Home / 751,387.86-1,037,021.54-465,000.21

Finding the Fourth Proportional to 751,387.86, 1,037,021.54 and 465,000.21

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Solution

The fourth proportional to 751,387.86, 1,037,021.54 and 465,000.21 is: 641,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,387.86 : 1,037,021.54 = 465,000.21 : x
  2. Step 2: Convert to fraction form
    751,387.86/1,037,021.54 = 465,000.21/x
  3. Step 3: Cross multiply
    751,387.86x = 1,037,021.54 × 465,000.21
  4. Step 4: Simplify right side
    751,387.86x = 482,215,231,549.52
  5. Step 5: Solve for x
    x = 482,215,231,549.52/751,387.86
  6. Step 6: Final answer
    x = 641,766.07

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Double scale
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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.