Home / 763,513.89-1,145,081.58-258,063.63

Finding the Fourth Proportional to 763,513.89, 1,145,081.58 and 258,063.63

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Solution

The fourth proportional to 763,513.89, 1,145,081.58 and 258,063.63 is: 387,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,513.89 : 1,145,081.58 = 258,063.63 : x
  2. Step 2: Convert to fraction form
    763,513.89/1,145,081.58 = 258,063.63/x
  3. Step 3: Cross multiply
    763,513.89x = 1,145,081.58 × 258,063.63
  4. Step 4: Simplify right side
    763,513.89x = 295,503,909,180.94
  5. Step 5: Solve for x
    x = 295,503,909,180.94/763,513.89
  6. Step 6: Final answer
    x = 387,031.48

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Double scale
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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.