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Finding the Fourth Proportional to 608,136.60, 912,464.10 and 383,669.40

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Solution

The fourth proportional to 608,136.60, 912,464.10 and 383,669.40 is: 575,667.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,136.60 : 912,464.10 = 383,669.40 : x
  2. Step 2: Convert to fraction form
    608,136.60/912,464.10 = 383,669.40/x
  3. Step 3: Cross multiply
    608,136.60x = 912,464.10 × 383,669.40
  4. Step 4: Simplify right side
    608,136.60x = 350,084,553,768.54
  5. Step 5: Solve for x
    x = 350,084,553,768.54/608,136.60
  6. Step 6: Final answer
    x = 575,667.63

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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.