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Finding the Fourth Proportional to 673,685.70, 929,653.60 and 383,269.92

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Solution

The fourth proportional to 673,685.70, 929,653.60 and 383,269.92 is: 528,893.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,685.70 : 929,653.60 = 383,269.92 : x
  2. Step 2: Convert to fraction form
    673,685.70/929,653.60 = 383,269.92/x
  3. Step 3: Cross multiply
    673,685.70x = 929,653.60 × 383,269.92
  4. Step 4: Simplify right side
    673,685.70x = 356,308,260,899.71
  5. Step 5: Solve for x
    x = 356,308,260,899.71/673,685.70
  6. Step 6: Final answer
    x = 528,893.91

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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.