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Finding the Fourth Proportional to 609,301.28, 840,789.60 and 380,114.60

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Solution

The fourth proportional to 609,301.28, 840,789.60 and 380,114.60 is: 524,529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,301.28 : 840,789.60 = 380,114.60 : x
  2. Step 2: Convert to fraction form
    609,301.28/840,789.60 = 380,114.60/x
  3. Step 3: Cross multiply
    609,301.28x = 840,789.60 × 380,114.60
  4. Step 4: Simplify right side
    609,301.28x = 319,596,402,488.16
  5. Step 5: Solve for x
    x = 319,596,402,488.16/609,301.28
  6. Step 6: Final answer
    x = 524,529.35

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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.