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Finding the Fourth Proportional to 665,813.46, 918,826.74 and 359,889.22

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Solution

The fourth proportional to 665,813.46, 918,826.74 and 359,889.22 is: 496,649.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,813.46 : 918,826.74 = 359,889.22 : x
  2. Step 2: Convert to fraction form
    665,813.46/918,826.74 = 359,889.22/x
  3. Step 3: Cross multiply
    665,813.46x = 918,826.74 × 359,889.22
  4. Step 4: Simplify right side
    665,813.46x = 330,675,838,773.74
  5. Step 5: Solve for x
    x = 330,675,838,773.74/665,813.46
  6. Step 6: Final answer
    x = 496,649.37

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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.