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Finding the Fourth Proportional to 627,509.76, 866,039.04 and 359,232

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Solution

The fourth proportional to 627,509.76, 866,039.04 and 359,232 is: 495,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,509.76 : 866,039.04 = 359,232 : x
  2. Step 2: Convert to fraction form
    627,509.76/866,039.04 = 359,232/x
  3. Step 3: Cross multiply
    627,509.76x = 866,039.04 × 359,232
  4. Step 4: Simplify right side
    627,509.76x = 311,108,936,417.28
  5. Step 5: Solve for x
    x = 311,108,936,417.28/627,509.76
  6. Step 6: Final answer
    x = 495,783.42

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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.