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Finding the Fourth Proportional to 704,912.60, 972,775.90 and 382,620.08

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Solution

The fourth proportional to 704,912.60, 972,775.90 and 382,620.08 is: 528,013.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,912.60 : 972,775.90 = 382,620.08 : x
  2. Step 2: Convert to fraction form
    704,912.60/972,775.90 = 382,620.08/x
  3. Step 3: Cross multiply
    704,912.60x = 972,775.90 × 382,620.08
  4. Step 4: Simplify right side
    704,912.60x = 372,203,592,680.07
  5. Step 5: Solve for x
    x = 372,203,592,680.07/704,912.60
  6. Step 6: Final answer
    x = 528,013.82

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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.