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Finding the Fourth Proportional to 620,879.28, 931,024.08 and 283,819.92

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Solution

The fourth proportional to 620,879.28, 931,024.08 and 283,819.92 is: 425,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,879.28 : 931,024.08 = 283,819.92 : x
  2. Step 2: Convert to fraction form
    620,879.28/931,024.08 = 283,819.92/x
  3. Step 3: Cross multiply
    620,879.28x = 931,024.08 × 283,819.92
  4. Step 4: Simplify right side
    620,879.28x = 264,243,179,903.67
  5. Step 5: Solve for x
    x = 264,243,179,903.67/620,879.28
  6. Step 6: Final answer
    x = 425,595.10

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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.