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Finding the Fourth Proportional to 666,681.62, 920,023.08 and 360,758.01

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Solution

The fourth proportional to 666,681.62, 920,023.08 and 360,758.01 is: 497,847.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,681.62 : 920,023.08 = 360,758.01 : x
  2. Step 2: Convert to fraction form
    666,681.62/920,023.08 = 360,758.01/x
  3. Step 3: Cross multiply
    666,681.62x = 920,023.08 × 360,758.01
  4. Step 4: Simplify right side
    666,681.62x = 331,905,689,090.97
  5. Step 5: Solve for x
    x = 331,905,689,090.97/666,681.62
  6. Step 6: Final answer
    x = 497,847.37

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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.