Home / 819,372.80-1,130,735.16-456,789.39

Finding the Fourth Proportional to 819,372.80, 1,130,735.16 and 456,789.39

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Solution

The fourth proportional to 819,372.80, 1,130,735.16 and 456,789.39 is: 630,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,372.80 : 1,130,735.16 = 456,789.39 : x
  2. Step 2: Convert to fraction form
    819,372.80/1,130,735.16 = 456,789.39/x
  3. Step 3: Cross multiply
    819,372.80x = 1,130,735.16 × 456,789.39
  4. Step 4: Simplify right side
    819,372.80x = 516,507,823,987.95
  5. Step 5: Solve for x
    x = 516,507,823,987.95/819,372.80
  6. Step 6: Final answer
    x = 630,369.75

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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.