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Finding the Fourth Proportional to 664,267.22, 916,460.25 and 402,706.88

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Solution

The fourth proportional to 664,267.22, 916,460.25 and 402,706.88 is: 555,596.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,267.22 : 916,460.25 = 402,706.88 : x
  2. Step 2: Convert to fraction form
    664,267.22/916,460.25 = 402,706.88/x
  3. Step 3: Cross multiply
    664,267.22x = 916,460.25 × 402,706.88
  4. Step 4: Simplify right side
    664,267.22x = 369,064,847,921.52
  5. Step 5: Solve for x
    x = 369,064,847,921.52/664,267.22
  6. Step 6: Final answer
    x = 555,596.96

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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.