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Finding the Fourth Proportional to 698,480.66, 963,907.16 and 408,109.28

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Solution

The fourth proportional to 698,480.66, 963,907.16 and 408,109.28 is: 563,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,480.66 : 963,907.16 = 408,109.28 : x
  2. Step 2: Convert to fraction form
    698,480.66/963,907.16 = 408,109.28/x
  3. Step 3: Cross multiply
    698,480.66x = 963,907.16 × 408,109.28
  4. Step 4: Simplify right side
    698,480.66x = 393,379,453,255.18
  5. Step 5: Solve for x
    x = 393,379,453,255.18/698,480.66
  6. Step 6: Final answer
    x = 563,193.05

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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.