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Finding the Fourth Proportional to 665,812.46, 918,825.36 and 359,888.22

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Solution

The fourth proportional to 665,812.46, 918,825.36 and 359,888.22 is: 496,647.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,812.46 : 918,825.36 = 359,888.22 : x
  2. Step 2: Convert to fraction form
    665,812.46/918,825.36 = 359,888.22/x
  3. Step 3: Cross multiply
    665,812.46x = 918,825.36 × 359,888.22
  4. Step 4: Simplify right side
    665,812.46x = 330,674,423,301.26
  5. Step 5: Solve for x
    x = 330,674,423,301.26/665,812.46
  6. Step 6: Final answer
    x = 496,647.99

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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.