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Finding the Fourth Proportional to 560,720.88, 840,219.89 and 380,572.02

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Solution

The fourth proportional to 560,720.88, 840,219.89 and 380,572.02 is: 570,273.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,720.88 : 840,219.89 = 380,572.02 : x
  2. Step 2: Convert to fraction form
    560,720.88/840,219.89 = 380,572.02/x
  3. Step 3: Cross multiply
    560,720.88x = 840,219.89 × 380,572.02
  4. Step 4: Simplify right side
    560,720.88x = 319,764,178,878.62
  5. Step 5: Solve for x
    x = 319,764,178,878.62/560,720.88
  6. Step 6: Final answer
    x = 570,273.36

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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.