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Finding the Fourth Proportional to 664,272, 917,110.08 and 426,222.72

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Solution

The fourth proportional to 664,272, 917,110.08 and 426,222.72 is: 588,453.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,272 : 917,110.08 = 426,222.72 : x
  2. Step 2: Convert to fraction form
    664,272/917,110.08 = 426,222.72/x
  3. Step 3: Cross multiply
    664,272x = 917,110.08 × 426,222.72
  4. Step 4: Simplify right side
    664,272x = 390,893,152,837.02
  5. Step 5: Solve for x
    x = 390,893,152,837.02/664,272
  6. Step 6: Final answer
    x = 588,453.45

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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.