Home / 945,009.68-1,304,140.25-515,313.38

Finding the Fourth Proportional to 945,009.68, 1,304,140.25 and 515,313.38

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Solution

The fourth proportional to 945,009.68, 1,304,140.25 and 515,313.38 is: 711,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,009.68 : 1,304,140.25 = 515,313.38 : x
  2. Step 2: Convert to fraction form
    945,009.68/1,304,140.25 = 515,313.38/x
  3. Step 3: Cross multiply
    945,009.68x = 1,304,140.25 × 515,313.38
  4. Step 4: Simplify right side
    945,009.68x = 672,040,911,124.28
  5. Step 5: Solve for x
    x = 672,040,911,124.28/945,009.68
  6. Step 6: Final answer
    x = 711,147.12

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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.