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Finding the Fourth Proportional to 492,430.55, 679,438.41 and 298,833.89

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Solution

The fourth proportional to 492,430.55, 679,438.41 and 298,833.89 is: 412,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,430.55 : 679,438.41 = 298,833.89 : x
  2. Step 2: Convert to fraction form
    492,430.55/679,438.41 = 298,833.89/x
  3. Step 3: Cross multiply
    492,430.55x = 679,438.41 × 298,833.89
  4. Step 4: Simplify right side
    492,430.55x = 203,039,223,075.72
  5. Step 5: Solve for x
    x = 203,039,223,075.72/492,430.55
  6. Step 6: Final answer
    x = 412,320.53

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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.