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Finding the Fourth Proportional to 620,999.84, 930,720.40 and 265,596

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Solution

The fourth proportional to 620,999.84, 930,720.40 and 265,596 is: 398,060.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,999.84 : 930,720.40 = 265,596 : x
  2. Step 2: Convert to fraction form
    620,999.84/930,720.40 = 265,596/x
  3. Step 3: Cross multiply
    620,999.84x = 930,720.40 × 265,596
  4. Step 4: Simplify right side
    620,999.84x = 247,195,615,358.40
  5. Step 5: Solve for x
    x = 247,195,615,358.40/620,999.84
  6. Step 6: Final answer
    x = 398,060.67

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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.