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Finding the Fourth Proportional to 492,430.50, 679,606.41 and 288,652.69

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Solution

The fourth proportional to 492,430.50, 679,606.41 and 288,652.69 is: 398,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,430.50 : 679,606.41 = 288,652.69 : x
  2. Step 2: Convert to fraction form
    492,430.50/679,606.41 = 288,652.69/x
  3. Step 3: Cross multiply
    492,430.50x = 679,606.41 × 288,652.69
  4. Step 4: Simplify right side
    492,430.50x = 196,170,219,237.25
  5. Step 5: Solve for x
    x = 196,170,219,237.25/492,430.50
  6. Step 6: Final answer
    x = 398,371.38

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1.5x scale

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.