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Finding the Fourth Proportional to 666,681.57, 920,022.99 and 360,757.95

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Solution

The fourth proportional to 666,681.57, 920,022.99 and 360,757.95 is: 497,847.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,681.57 : 920,022.99 = 360,757.95 : x
  2. Step 2: Convert to fraction form
    666,681.57/920,022.99 = 360,757.95/x
  3. Step 3: Cross multiply
    666,681.57x = 920,022.99 × 360,757.95
  4. Step 4: Simplify right side
    666,681.57x = 331,905,607,825.27
  5. Step 5: Solve for x
    x = 331,905,607,825.27/666,681.57
  6. Step 6: Final answer
    x = 497,847.28

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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.