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Finding the Fourth Proportional to 608,212.19, 912,693.49 and 308,907.57

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Solution

The fourth proportional to 608,212.19, 912,693.49 and 308,907.57 is: 463,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,212.19 : 912,693.49 = 308,907.57 : x
  2. Step 2: Convert to fraction form
    608,212.19/912,693.49 = 308,907.57/x
  3. Step 3: Cross multiply
    608,212.19x = 912,693.49 × 308,907.57
  4. Step 4: Simplify right side
    608,212.19x = 281,937,930,801.05
  5. Step 5: Solve for x
    x = 281,937,930,801.05/608,212.19
  6. Step 6: Final answer
    x = 463,551.92

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1.5x scale

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.