Home / 690,871.38-953,388.14-384,946.54

Finding the Fourth Proportional to 690,871.38, 953,388.14 and 384,946.54

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Solution

The fourth proportional to 690,871.38, 953,388.14 and 384,946.54 is: 531,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,871.38 : 953,388.14 = 384,946.54 : x
  2. Step 2: Convert to fraction form
    690,871.38/953,388.14 = 384,946.54/x
  3. Step 3: Cross multiply
    690,871.38x = 953,388.14 × 384,946.54
  4. Step 4: Simplify right side
    690,871.38x = 367,003,465,770.04
  5. Step 5: Solve for x
    x = 367,003,465,770.04/690,871.38
  6. Step 6: Final answer
    x = 531,218.22

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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.