Home / 756,351.40-1,134,527.10-257,715.40

Finding the Fourth Proportional to 756,351.40, 1,134,527.10 and 257,715.40

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Solution

The fourth proportional to 756,351.40, 1,134,527.10 and 257,715.40 is: 386,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,351.40 : 1,134,527.10 = 257,715.40 : x
  2. Step 2: Convert to fraction form
    756,351.40/1,134,527.10 = 257,715.40/x
  3. Step 3: Cross multiply
    756,351.40x = 1,134,527.10 × 257,715.40
  4. Step 4: Simplify right side
    756,351.40x = 292,385,105,387.34
  5. Step 5: Solve for x
    x = 292,385,105,387.34/756,351.40
  6. Step 6: Final answer
    x = 386,573.10

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Double scale
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Similar ratio
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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.