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Finding the Fourth Proportional to 614,911.07, 848,575.08 and 342,978.75

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Solution

The fourth proportional to 614,911.07, 848,575.08 and 342,978.75 is: 473,309.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,911.07 : 848,575.08 = 342,978.75 : x
  2. Step 2: Convert to fraction form
    614,911.07/848,575.08 = 342,978.75/x
  3. Step 3: Cross multiply
    614,911.07x = 848,575.08 × 342,978.75
  4. Step 4: Simplify right side
    614,911.07x = 291,043,220,219.55
  5. Step 5: Solve for x
    x = 291,043,220,219.55/614,911.07
  6. Step 6: Final answer
    x = 473,309.45

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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.