Home / 827,750.75-1,142,397.47-465,189.89

Finding the Fourth Proportional to 827,750.75, 1,142,397.47 and 465,189.89

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Solution

The fourth proportional to 827,750.75, 1,142,397.47 and 465,189.89 is: 642,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,750.75 : 1,142,397.47 = 465,189.89 : x
  2. Step 2: Convert to fraction form
    827,750.75/1,142,397.47 = 465,189.89/x
  3. Step 3: Cross multiply
    827,750.75x = 1,142,397.47 × 465,189.89
  4. Step 4: Simplify right side
    827,750.75x = 531,431,748,856.57
  5. Step 5: Solve for x
    x = 531,431,748,856.57/827,750.75
  6. Step 6: Final answer
    x = 642,019.05

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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.