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Finding the Fourth Proportional to 660,380.64, 911,368.83 and 370,015.48

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Solution

The fourth proportional to 660,380.64, 911,368.83 and 370,015.48 is: 510,645.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,380.64 : 911,368.83 = 370,015.48 : x
  2. Step 2: Convert to fraction form
    660,380.64/911,368.83 = 370,015.48/x
  3. Step 3: Cross multiply
    660,380.64x = 911,368.83 × 370,015.48
  4. Step 4: Simplify right side
    660,380.64x = 337,220,575,089.49
  5. Step 5: Solve for x
    x = 337,220,575,089.49/660,380.64
  6. Step 6: Final answer
    x = 510,645.76

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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.