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Finding the Fourth Proportional to 555,738.76, 766,920.28 and 301,089.96

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Solution

The fourth proportional to 555,738.76, 766,920.28 and 301,089.96 is: 415,504.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,738.76 : 766,920.28 = 301,089.96 : x
  2. Step 2: Convert to fraction form
    555,738.76/766,920.28 = 301,089.96/x
  3. Step 3: Cross multiply
    555,738.76x = 766,920.28 × 301,089.96
  4. Step 4: Simplify right side
    555,738.76x = 230,911,996,428.39
  5. Step 5: Solve for x
    x = 230,911,996,428.39/555,738.76
  6. Step 6: Final answer
    x = 415,504.57

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Double scale
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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.