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Finding the Fourth Proportional to 666,681.37, 920,022.73 and 360,757.76

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Solution

The fourth proportional to 666,681.37, 920,022.73 and 360,757.76 is: 497,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,681.37 : 920,022.73 = 360,757.76 : x
  2. Step 2: Convert to fraction form
    666,681.37/920,022.73 = 360,757.76/x
  3. Step 3: Cross multiply
    666,681.37x = 920,022.73 × 360,757.76
  4. Step 4: Simplify right side
    666,681.37x = 331,905,339,223.89
  5. Step 5: Solve for x
    x = 331,905,339,223.89/666,681.37
  6. Step 6: Final answer
    x = 497,847.03

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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.