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Finding the Fourth Proportional to 839,875.70, 1,158,978.53 and 477,249.23

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Solution

The fourth proportional to 839,875.70, 1,158,978.53 and 477,249.23 is: 658,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,875.70 : 1,158,978.53 = 477,249.23 : x
  2. Step 2: Convert to fraction form
    839,875.70/1,158,978.53 = 477,249.23/x
  3. Step 3: Cross multiply
    839,875.70x = 1,158,978.53 × 477,249.23
  4. Step 4: Simplify right side
    839,875.70x = 553,121,611,029.03
  5. Step 5: Solve for x
    x = 553,121,611,029.03/839,875.70
  6. Step 6: Final answer
    x = 658,575.56

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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.