Home / 763,749.46-1,145,312.07-331,494.58

Finding the Fourth Proportional to 763,749.46, 1,145,312.07 and 331,494.58

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Solution

The fourth proportional to 763,749.46, 1,145,312.07 and 331,494.58 is: 497,106.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,749.46 : 1,145,312.07 = 331,494.58 : x
  2. Step 2: Convert to fraction form
    763,749.46/1,145,312.07 = 331,494.58/x
  3. Step 3: Cross multiply
    763,749.46x = 1,145,312.07 × 331,494.58
  4. Step 4: Simplify right side
    763,749.46x = 379,664,743,613.58
  5. Step 5: Solve for x
    x = 379,664,743,613.58/763,749.46
  6. Step 6: Final answer
    x = 497,106.40

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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.