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Finding the Fourth Proportional to 535,638.40, 801,902.40 and 520,086.40

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Solution

The fourth proportional to 535,638.40, 801,902.40 and 520,086.40 is: 778,619.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,638.40 : 801,902.40 = 520,086.40 : x
  2. Step 2: Convert to fraction form
    535,638.40/801,902.40 = 520,086.40/x
  3. Step 3: Cross multiply
    535,638.40x = 801,902.40 × 520,086.40
  4. Step 4: Simplify right side
    535,638.40x = 417,058,532,367.36
  5. Step 5: Solve for x
    x = 417,058,532,367.36/535,638.40
  6. Step 6: Final answer
    x = 778,619.55

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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.