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Finding the Fourth Proportional to 672,501.78, 928,040.36 and 366,580.76

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Solution

The fourth proportional to 672,501.78, 928,040.36 and 366,580.76 is: 505,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,501.78 : 928,040.36 = 366,580.76 : x
  2. Step 2: Convert to fraction form
    672,501.78/928,040.36 = 366,580.76/x
  3. Step 3: Cross multiply
    672,501.78x = 928,040.36 × 366,580.76
  4. Step 4: Simplify right side
    672,501.78x = 340,201,734,006.37
  5. Step 5: Solve for x
    x = 340,201,734,006.37/672,501.78
  6. Step 6: Final answer
    x = 505,874.85

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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.