Home / 815,425.34-1,125,849.90-509,639.16

Finding the Fourth Proportional to 815,425.34, 1,125,849.90 and 509,639.16

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Solution

The fourth proportional to 815,425.34, 1,125,849.90 and 509,639.16 is: 703,653.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,425.34 : 1,125,849.90 = 509,639.16 : x
  2. Step 2: Convert to fraction form
    815,425.34/1,125,849.90 = 509,639.16/x
  3. Step 3: Cross multiply
    815,425.34x = 1,125,849.90 × 509,639.16
  4. Step 4: Simplify right side
    815,425.34x = 573,777,197,322.08
  5. Step 5: Solve for x
    x = 573,777,197,322.08/815,425.34
  6. Step 6: Final answer
    x = 703,653.88

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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.