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Finding the Fourth Proportional to 677,444.96, 934,842.40 and 391,057.32

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Solution

The fourth proportional to 677,444.96, 934,842.40 and 391,057.32 is: 539,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,444.96 : 934,842.40 = 391,057.32 : x
  2. Step 2: Convert to fraction form
    677,444.96/934,842.40 = 391,057.32/x
  3. Step 3: Cross multiply
    677,444.96x = 934,842.40 × 391,057.32
  4. Step 4: Simplify right side
    677,444.96x = 365,576,963,566.37
  5. Step 5: Solve for x
    x = 365,576,963,566.37/677,444.96
  6. Step 6: Final answer
    x = 539,640.83

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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.