Home / 699,969.92-966,031.04-428,218.76

Finding the Fourth Proportional to 699,969.92, 966,031.04 and 428,218.76

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Solution

The fourth proportional to 699,969.92, 966,031.04 and 428,218.76 is: 590,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,969.92 : 966,031.04 = 428,218.76 : x
  2. Step 2: Convert to fraction form
    699,969.92/966,031.04 = 428,218.76/x
  3. Step 3: Cross multiply
    699,969.92x = 966,031.04 × 428,218.76
  4. Step 4: Simplify right side
    699,969.92x = 413,672,617,555.94
  5. Step 5: Solve for x
    x = 413,672,617,555.94/699,969.92
  6. Step 6: Final answer
    x = 590,986.28

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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.