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Finding the Fourth Proportional to 572,437.92, 789,924.68 and 317,769

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Solution

The fourth proportional to 572,437.92, 789,924.68 and 317,769 is: 438,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,437.92 : 789,924.68 = 317,769 : x
  2. Step 2: Convert to fraction form
    572,437.92/789,924.68 = 317,769/x
  3. Step 3: Cross multiply
    572,437.92x = 789,924.68 × 317,769
  4. Step 4: Simplify right side
    572,437.92x = 251,013,575,638.92
  5. Step 5: Solve for x
    x = 251,013,575,638.92/572,437.92
  6. Step 6: Final answer
    x = 438,499.21

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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.