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Finding the Fourth Proportional to 620,040.40, 930,751.80 and 340,104.40

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Solution

The fourth proportional to 620,040.40, 930,751.80 and 340,104.40 is: 510,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,040.40 : 930,751.80 = 340,104.40 : x
  2. Step 2: Convert to fraction form
    620,040.40/930,751.80 = 340,104.40/x
  3. Step 3: Cross multiply
    620,040.40x = 930,751.80 × 340,104.40
  4. Step 4: Simplify right side
    620,040.40x = 316,552,782,487.92
  5. Step 5: Solve for x
    x = 316,552,782,487.92/620,040.40
  6. Step 6: Final answer
    x = 510,535.74

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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.