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Finding the Fourth Proportional to 587,132.37, 810,228.93 and 345,430.50

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Solution

The fourth proportional to 587,132.37, 810,228.93 and 345,430.50 is: 476,686.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,132.37 : 810,228.93 = 345,430.50 : x
  2. Step 2: Convert to fraction form
    587,132.37/810,228.93 = 345,430.50/x
  3. Step 3: Cross multiply
    587,132.37x = 810,228.93 × 345,430.50
  4. Step 4: Simplify right side
    587,132.37x = 279,877,784,404.37
  5. Step 5: Solve for x
    x = 279,877,784,404.37/587,132.37
  6. Step 6: Final answer
    x = 476,686.01

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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.