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Finding the Fourth Proportional to 572,355.92, 789,811.66 and 317,687.06

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Solution

The fourth proportional to 572,355.92, 789,811.66 and 317,687.06 is: 438,386.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,355.92 : 789,811.66 = 317,687.06 : x
  2. Step 2: Convert to fraction form
    572,355.92/789,811.66 = 317,687.06/x
  3. Step 3: Cross multiply
    572,355.92x = 789,811.66 × 317,687.06
  4. Step 4: Simplify right side
    572,355.92x = 250,912,946,590.76
  5. Step 5: Solve for x
    x = 250,912,946,590.76/572,355.92
  6. Step 6: Final answer
    x = 438,386.22

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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.