Home / 851,554.40-1,275,885.65-513,885.51

Finding the Fourth Proportional to 851,554.40, 1,275,885.65 and 513,885.51

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Solution

The fourth proportional to 851,554.40, 1,275,885.65 and 513,885.51 is: 769,955.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,554.40 : 1,275,885.65 = 513,885.51 : x
  2. Step 2: Convert to fraction form
    851,554.40/1,275,885.65 = 513,885.51/x
  3. Step 3: Cross multiply
    851,554.40x = 1,275,885.65 × 513,885.51
  4. Step 4: Simplify right side
    851,554.40x = 655,659,145,382.50
  5. Step 5: Solve for x
    x = 655,659,145,382.50/851,554.40
  6. Step 6: Final answer
    x = 769,955.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.