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Finding the Fourth Proportional to 609,533.40, 912,987.90 and 504,557.40

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Solution

The fourth proportional to 609,533.40, 912,987.90 and 504,557.40 is: 755,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,533.40 : 912,987.90 = 504,557.40 : x
  2. Step 2: Convert to fraction form
    609,533.40/912,987.90 = 504,557.40/x
  3. Step 3: Cross multiply
    609,533.40x = 912,987.90 × 504,557.40
  4. Step 4: Simplify right side
    609,533.40x = 460,654,801,055.46
  5. Step 5: Solve for x
    x = 460,654,801,055.46/609,533.40
  6. Step 6: Final answer
    x = 755,749.89

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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.