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Finding the Fourth Proportional to 695,307.76, 959,577.12 and 389,368.56

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Solution

The fourth proportional to 695,307.76, 959,577.12 and 389,368.56 is: 537,357.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,307.76 : 959,577.12 = 389,368.56 : x
  2. Step 2: Convert to fraction form
    695,307.76/959,577.12 = 389,368.56/x
  3. Step 3: Cross multiply
    695,307.76x = 959,577.12 × 389,368.56
  4. Step 4: Simplify right side
    695,307.76x = 373,629,161,423.35
  5. Step 5: Solve for x
    x = 373,629,161,423.35/695,307.76
  6. Step 6: Final answer
    x = 537,357.96

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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.