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Finding the Fourth Proportional to 660,647.85, 911,758.02 and 370,308.74

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Solution

The fourth proportional to 660,647.85, 911,758.02 and 370,308.74 is: 511,061.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,647.85 : 911,758.02 = 370,308.74 : x
  2. Step 2: Convert to fraction form
    660,647.85/911,758.02 = 370,308.74/x
  3. Step 3: Cross multiply
    660,647.85x = 911,758.02 × 370,308.74
  4. Step 4: Simplify right side
    660,647.85x = 337,631,959,012.31
  5. Step 5: Solve for x
    x = 337,631,959,012.31/660,647.85
  6. Step 6: Final answer
    x = 511,061.92

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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.