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Finding the Fourth Proportional to 623,656.31, 860,647.79 and 337,178.43

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Solution

The fourth proportional to 623,656.31, 860,647.79 and 337,178.43 is: 465,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,656.31 : 860,647.79 = 337,178.43 : x
  2. Step 2: Convert to fraction form
    623,656.31/860,647.79 = 337,178.43/x
  3. Step 3: Cross multiply
    623,656.31x = 860,647.79 × 337,178.43
  4. Step 4: Simplify right side
    623,656.31x = 290,191,871,458.12
  5. Step 5: Solve for x
    x = 290,191,871,458.12/623,656.31
  6. Step 6: Final answer
    x = 465,307.36

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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.