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Finding the Fourth Proportional to 665,420.07, 918,280.13 and 359,496.27

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Solution

The fourth proportional to 665,420.07, 918,280.13 and 359,496.27 is: 496,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,420.07 : 918,280.13 = 359,496.27 : x
  2. Step 2: Convert to fraction form
    665,420.07/918,280.13 = 359,496.27/x
  3. Step 3: Cross multiply
    665,420.07x = 918,280.13 × 359,496.27
  4. Step 4: Simplify right side
    665,420.07x = 330,118,284,544.30
  5. Step 5: Solve for x
    x = 330,118,284,544.30/665,420.07
  6. Step 6: Final answer
    x = 496,105.09

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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.