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Finding the Fourth Proportional to 605,030.60, 907,740.30 and 405,576.20

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Solution

The fourth proportional to 605,030.60, 907,740.30 and 405,576.20 is: 608,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,030.60 : 907,740.30 = 405,576.20 : x
  2. Step 2: Convert to fraction form
    605,030.60/907,740.30 = 405,576.20/x
  3. Step 3: Cross multiply
    605,030.60x = 907,740.30 × 405,576.20
  4. Step 4: Simplify right side
    605,030.60x = 368,157,861,460.86
  5. Step 5: Solve for x
    x = 368,157,861,460.86/605,030.60
  6. Step 6: Final answer
    x = 608,494.61

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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.