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Finding the Fourth Proportional to 666,720.18, 920,073.83 and 360,796.56

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Solution

The fourth proportional to 666,720.18, 920,073.83 and 360,796.56 is: 497,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,720.18 : 920,073.83 = 360,796.56 : x
  2. Step 2: Convert to fraction form
    666,720.18/920,073.83 = 360,796.56/x
  3. Step 3: Cross multiply
    666,720.18x = 920,073.83 × 360,796.56
  4. Step 4: Simplify right side
    666,720.18x = 331,959,472,810.03
  5. Step 5: Solve for x
    x = 331,959,472,810.03/666,720.18
  6. Step 6: Final answer
    x = 497,899.24

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1.5x scale

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.