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Finding the Fourth Proportional to 615,978.20, 923,276.10 and 349,866.20

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Solution

The fourth proportional to 615,978.20, 923,276.10 and 349,866.20 is: 524,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,978.20 : 923,276.10 = 349,866.20 : x
  2. Step 2: Convert to fraction form
    615,978.20/923,276.10 = 349,866.20/x
  3. Step 3: Cross multiply
    615,978.20x = 923,276.10 × 349,866.20
  4. Step 4: Simplify right side
    615,978.20x = 323,023,100,657.82
  5. Step 5: Solve for x
    x = 323,023,100,657.82/615,978.20
  6. Step 6: Final answer
    x = 524,406.71

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1.5x scale

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.